A Thermal Processable, Self-Healing, and Fully Bio-Based Starch Plastic

September 18th 2023

A thermal processable, self-healing, and fully bio-based starch plastic.

The self-healing efficiency reached more than 88 percent in terms of mechanical properties.

The transfer of plastic waste from land to oceans and its subsequent accumulation within the food chain poses a major threat to both the environment and human health. Consequently, the development of renewable, low-cost and eco-friendly alternative materials has garnered tremendous attention and interest.

Starch is a highly desirable material for the production of bioplastics due to its abundance and renewable nature. However, limitations such as brittleness, hydrophilicity and thermal properties restrict its widespread application.

Structural design strategy of the fully bio-based starch plastic.

Addressing these concerns, a group of researchers from State Key Laboratory of Pulp and Paper Engineering at South China University of Technology presents a novel strategy for fabricating a fully bio-based starch plastic that exhibits numerous advantages, including superior flexibility, waterproof capability, excellent thermal processability and self-adaptability.

“Native starch exhibits great stiffness due to the strong hydrogen bonding between its molecular chains, resulting in challenges during thermal processing,” explains Xiaoqian Zhang, the first author of the study published in Green Energy & Environment. “A covalent adaptable network was constructed to effectively weaken the hydrogen bonding and improve the stress relaxation of starch chains.”

“In the production of the fully bio-based starch plastic, dialdehyde starch was subjected to a mild Schiff base reaction with a plant oil-based diamine. This reaction resulted in the formation of dynamic imine bonds, which exhibited the ability to be cleaved and reformed reversibly under heat stimulation. Consequently, the starch plastic demonstrated remarkable thermal processability,” Zhang said.

“Additionally, the presence of long aliphatic chains in the diamine enhanced the steric hinderance of the starch molecule chains, leading to improved flexibility and hydrophobicity of the starch plastic.”

Xiaohui Wang, corresponding author of the study, added, “Our transparent starch plastic, which contains imine bonds, also demonstrates self-healing capability. It can repair not only scratches but also large-area damage with a simple heat-pressing treatment.”

Notably, the self-healing efficiency reached more than 88% in terms of mechanical properties. Such desirable properties render the starch plastic highly appealing for various practical applications. “Through this study, we have successfully introduced a novel design strategy for developing sustainable, thermal processable, and degradable bioplastics using fully bio-based materials,” concluded Wang.

Source: https://phys.org/news/2023-09-thermal-self-healing-fully-bio-based-starch.html

DOI: 10.1016/j.gee.2023.08.002

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Resistant Starch Reduces Liver Triglycerides in People With Fatty Liver Disease

September 09th 2023

Study reveals how resistant starch intake lowers liver triglycerides in people with fatty liver disease.

For four months, participants in a clinical trial consumed resistant starch – known to encourage the growth of beneficial gut bacteria – which reduced intrahepatic triglyceride content (IHTC) by 5.89% after adjusting for weight loss. IHTC accumulation can potentially lead to non-alcoholic fatty liver disease (NAFLD).

Moreover, supplementation decreased serum branched-chain amino acids (BCAAs) and gut microbial species, particularly Bacteroides stercoris, strongly linked to IHTC and liver enzymes.

“We identified a new dietary intervention for NAFLD, and the approach is effective, affordable and sustainable,” co-author professor Huating Li, from the Shanghai Sixth People’s Hospital, tells Nutrition Insight.

“Compared with strenuous exercise or weight loss treatment, increasing resistant starch intake upon a normal and balanced diet is much easier for people to follow. We hope people can release the importance and effectiveness of lifestyle changes for disease management and put it into practice.”

A fat buildup in the liver causes NAFLD and can lead to severe liver diseases. It affects about 30% of the global population and can contribute to other conditions, such as Type 2 diabetes, cardiovascular disease and chronic kidney disease.

The consumption of resistant starch led to both weight loss (5.78%) and the reduction of liver triglycerides. There is no approved medicine to treat the disease. Doctors usually recommend dietary changes and exercise to alleviate the conditions.

Professor Weiping Jia, co-author of the study, tells us that weight loss and resistant starch intake are effective dietary approaches to alleviating NAFLD.

“Previous work has shown that weight loss is safe and dose-dependently improves histological disease activity in non-alcoholic steatohepatitis (the most severe form of NAFLD), with weight loss of 5% or more associated with NAFLD improvement and a weight loss equal to or less than 7% associated with histological improvement.”

“In our study, it is worth noting that the consumption of resistant starch led to both weight loss (5.78%) and the reduction of liver triglycerides.”

“More importantly, the effect of resistant starch in reducing liver triglycerides is independent of weight loss, with only 23% of liver fat reduction contributed by weight loss.”

The researchers note that evidence suggests that NAFLD is closely related to gut microbiota through the gut-liver axis. For example, patients in the early stages of the disease have an altered gut bacteria profile. Although microbiota-directed foods have shown promise in NAFLD patients, studies are in an early stage.

In the current study, published in Cell Metabolism, 196 NAFLD patients followed a balanced dietary plan designed by a nutritionist. Over half of the participants (99) received a resistant starch powder derived from maize, while the control group consumed calorie-matched, non-resistant corn starch.

Trial participants drank 20 g of the starch mixed with 300 mL water before meals twice daily over four months.

“After the four-month resistant starch intake, the relative reduction of the liver fat fraction was 39.4% compared to the control,” highlights Li. “In prior research, an equal to or less than 30% reduction has been associated with an improvement in histological steatohepatitis, a more severe disease stage and is one of the leading causes of cirrhosis and hepatocellular carcinoma.”

In addition, liver enzymes and inflammatory factors were reduced for participants consuming resistant starch.

A biomarker for NAFLD was significantly reduced after the consumption of resistant starch.

“Our study not only demonstrates the clinical benefits of using resistant starch in NAFLD via a randomized controlled clinical trial but also reveals the underlying mechanism,” says Jia.

“From a double-blinded clinical trial to the identification of key microbial species, and further to the causal relationship between microbiome (and its metabolites) and host phenotype, our study is comprehensive and provides a complete chain of evidence for research into microbiome-linked diseases.”

Currently, there is no approved medicine to treat NAFLD, doctors advise dietary changes and exercise.

The resistant starch group had a different microbiota composition and functionality than the control group. For example, resistant starch reduced the abundance in the gut of B. stercoris, a species highly correlated with IHTC.

The researchers note that these correlations remained significant even after controlling for obesity-related parameters, suggesting that resistant starch’s effect is independent of body weight.

After transplanting fecal microbiota from resistant starch-treatment patients to mice eating a high-fat, high-cholesterol diet, liver weight and triglyceride levels were significantly reduced. In contrast, liver tissue grading improved compared to mice receiving microbiota from the control group.

The researchers suggest that further research may reveal other possible molecular mechanisms by which the resistant starch-altered metabolites or gut microbes lead to the accumulation or reduction of liver fat, inflammation and fibrosis in the liver.

“Confirming histological responses would need liver biopsy in further studies,” notes Li.

Jia adds that liver biopsy is invasive but is the gold standard for disease diagnosis. “In addition, a standardized diet can be used to directly control for the effect of diet as a potential confounding factor.”

Source: https://www.nutritioninsight.com/news/gut-liver-axis-clinical-trial-suggests-novel-and-sustainable-approach-to-manage-fatty-liver-diseases.html

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Breeding Wheat Plants With Better Starch

August 28th 2023

Starch science: researchers discover crucial enzyme for better baking, brewing and milling.

A team of UK researchers has figured out how low-quality starch grows in wheat.

The discovery, published in The Plant Cell, could help to breed plants with more control over their starch.

As well as being an important nutritional source of carbohydrates, starch is a valuable ingredient in brewing, glue, paper, textiles, and construction materials.

In the plant tribe Triticeae, which includes wheat, barley, and rye, starch grows in two distinct granules: large “A-type” granules, and small, more problematic, “B-type” granules.

Wheat starch granules – large A-type and small B-type – under a scanning electron microscope. Credit: Brendan Fahy/Nitin Uttam Kamble

A-type granules are often better for making starchy things. B-type granules can get lost during flour milling because of their size, leading to waste. They also present problems when using starch for other things: too many B-type granules in beer, for instance, makes it cloudy.

These researchers have found the culprit that makes the B-type granules: an enzyme, or type of protein, called PHS1.

“We discovered that the ubiquitous enzyme, (PHS1) is crucial for the formation of B-type granules in wheat,” says lead author Dr Nitin Uttam Kamble, a postdoctoral scientist at the John Innes Centre, UK.

“This is a scientific breakthrough because decades of research on this enzyme have failed to find a clear role for PHS1 in plants, and it shows that the A- and B-type granules of wheat form via different biochemical mechanisms.

“We can now use this knowledge to create variations in starch for different food and industrial applications.”

The researchers found that the enzyme interacts with other B-type granule proteins in lab-based experiments.

They then bred wheat plants with mutated genomes that didn’t include a gene for PHS1, finding they had fewer B-type granules than the wild-type plants.

“Industry does not generally like heterogeneity; it wants something nice and even to process smoothly and having these different types of starch granules in wheat has always represented a challenge,” says group leader Dr David Seung, also at John Innes.

“So, for us to discover the enzyme responsible for making the smaller granule population and to be able to use our breeding platform to reduce the number of B-type granules will hopefully be of great interest to many industry users.

“Combined together with our previous work, we now have a panel of diverse, novel wheat starches that vary in granule morphology, and these have diverse physical and chemical properties.”

The researchers are now interested in seeing how these granules interact with digestibility, human health and cooking quality.

Source: https://academic.oup.com/plcell/advance-article/doi/10.1093/plcell/koad217/7246009

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Combining Starch With PLA Improves Its Industrial Compostability

August 08th 2023

Combining starch with PLA improves its industrial compostability, researchers claim.

Published in ACS Sustainable Chemistry & Engineering and supported by the US Department of Agriculture and MSU AgBioResearch, the team’s research suggests that PLA can sit in industrial composting conditions for around 20 days before microbial decomposition begins. In response, thermoplastic starch derived from carbohydrates has been precisely implemented into PLA, which apparently provides a substance for the microbes to break down while the PLA degrades.

A collaboration between postdoctoral researcher Anibal Bher and doctoral students Pooja Mayekar and Wanwarang Limsukon combined their knowledge to draw upon Bher’s existing research into the strength, clarity, and other benefits of different PLA-thermoplastic starch blends, as well as observe the difference between breakdown processes under different conditions.
If managed correctly, PLA’s waste byproducts are water, carbon dioxide, and lactic acid – all natural substances that would not cause negative environmental impacts. In addition, PLA itself is already derived from plant sugars instead of petroleum; and, with less than 10% of plastic waste thought to be recycled in the US, composting them in industrial conditions would save both consumers and recyclers the time, water, and energy needed to clean plastic waste for recycling.

Inside this conditioned chamber in Rafael Auras’ lab at Michigan State University, researchers can regulate composting conditions, including temperature, humidity and airflow, while measuring the carbon dioxide produced by microbes as they digest materials in the bioreactors. Credit: Matt Davenport/MSU

Rafael Auras, MSU professor, the Amcor Endowed Chair in Packaging Sustainability, and leader of the project, explained: “In the U.S. and globally, there is a large issue with waste and
especially plastic waste.

“By developing biodegradable and compostable products, we can divert some of that waste. We can reduce the amount that goes into a landfill.”

However, the researchers highlight that social and behavioural factors will need to change to implement their solution at a larger scale. This apparently includes the scepticism of industrial composters surrounding bioplastics and consumers’ misguided belief that biodegradable and compostable materials will break down effectively in every environment, with the latter
contributing towards litter.

Therefore, the team now seeks to raise awareness around the necessary changes in behaviour to further the pursuit of circularity for plastic materials like PLA. “There’s not going to be one solution to the entire problem of plastic waste management,” said Mayekar. “What we’ve developed is one approach from the packaging side.

“It’s really easy to just blame plastic for its problems, but I think we need to change the conversation about how we manage it.” Auras continued: “If people think we develop something biodegradable so it can be littered, that will make the problem worse. The technology we develop is meant to be introduced into active waste-management scenarios.”

“We need to be conscious of how we manage waste, especially plastics,” added Bher. “Even at home, you’ll need to think about how you’re managing that small composting process.”
Another recent breakthrough saw researchers at the University of Washington claim to develop new bioplastics that apparently break down at the same rate as a banana peel in a home compost bin. This is hoped to prevent plastics from creating microplastic pollution if they escape recycling streams.

Meanwhile, European Bioplastics has predicted that the global capacity of bioplastic production will increase by 4.7 million tonnes between the end of 2022 and 2027.

Source: https://packagingeurope.com/news/combining-starch-with-pla-improves-its-industrial-compostability-researchers-claim/10148.article

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Industry In Cuban Central Province Guarantees Corn Starch For National Demand

August 08th 2023

Industry in Cuban central province guarantees corn starch for national demand.

The 44-year-old company Producing and Commercializing Glucose, Starch and Corn Derivatives (GydeMa) in the province of Cienfuegos, the only one of its kind in Cuba, has over-fulfilled its production plan until the month of July, in the fundamental items destined for social consumption.
Joel Portell del Sol, general director of that entity, told the Cuban News Agency that at that stage they produced 2,560 tons of corn starch, of which 65 % of these production levels are destined for state orders, including medical diets for children with celiac disease and other types of illnesses.
They also pay taxes to children’s hospitals; to dairy companies for the production of ice cream and processed cheese; to meat companies for the production of sausages; and to the confectionery and canning industries.

Among the assortments of this entity of continuous processes, and with taxation to all Cuban provinces, there are also custards, baking powder, panettone mix, arepas and syrup.
Portell del Sol indicated that this volume implied a 102 % execution of the commitment for the first seven months of the year, while the income behaved at 117.9 %.
The plant, with technology from several countries of the former European socialist bloc, presents a great technological obsolescence, and has never undergone an investment process, since it is maintained by the efforts of its 250 men and women, who develop the repairs with their own inventiveness.
Conceived by the idea of Commander in Chief Fidel Castro Ruz, the former Glucose Factory, now Gydema, is part of the Labiofam Group, and belongs to the Ministry of Agriculture.

Source: www.cubanews.acn.cu/cuba/22078-industry-in-cuban-central-province-guarantees-corn-starch-for-national-demand

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Revolutionizing Starch Factory Effluent Treatment

July 23rd 2023

Revolutionizing starch factory effluent treatment with AI and ML.

Revolutionizing Starch Factory Effluent Treatment with AI and Machine Learning: A New Era in Industrial Waste Management.

In the wake of growing environmental concerns, industries worldwide are seeking innovative solutions to manage and reduce their waste. Among these, the starch industry is a significant contributor to industrial effluent, a form of liquid waste discharged into water bodies. The treatment of this effluent is a complex and costly process, but recent advancements in Artificial Intelligence (AI) and Machine Learning (ML) are revolutionizing the way we approach this issue, heralding a new era in industrial waste management.

Starch factories produce effluent that is rich in organic matter, which can cause severe environmental damage if not treated properly. Traditional methods of effluent treatment involve biological, chemical, and physical processes that are not only expensive but also require constant monitoring and manual intervention. However, the advent of AI and ML technologies has brought about a paradigm shift in effluent treatment, making it more efficient, cost-effective, and environmentally friendly.

AI and ML algorithms can analyze vast amounts of data to predict and optimize the treatment process. For instance, they can predict the amount of effluent that will be produced, determine the optimal treatment method, and even predict potential failures in the treatment system. This predictive capability not only reduces the risk of environmental damage but also helps in resource allocation and cost reduction.

Moreover, AI and ML can automate the entire treatment process, reducing the need for manual intervention. They can monitor the effluent in real-time, adjust the treatment parameters as needed, and even alert the operators in case of any anomalies. This automation not only improves the efficiency of the treatment process but also frees up the operators to focus on other critical tasks.

In addition to improving the treatment process, AI and ML can also help in waste reduction. They can analyze the production process to identify areas where waste can be minimized or even eliminated. For instance, they can optimize the use of raw materials, reduce energy consumption, and even suggest changes in the production process that can lead to less effluent production. This proactive approach to waste management not only reduces the amount of effluent that needs to be treated but also contributes to the overall sustainability of the starch industry.

While the use of AI and ML in effluent treatment is still in its early stages, several starch factories have already started to reap the benefits of these technologies. They have reported significant improvements in their effluent treatment process, including reduced costs, improved efficiency, and less environmental impact. Moreover, they have also reported a positive impact on their bottom line, as the savings from improved waste management can be reinvested in other areas of the business.

In conclusion, the integration of AI and ML technologies in starch factory effluent treatment is a game-changer. It not only revolutionizes the way we treat industrial waste but also paves the way for a more sustainable and environmentally friendly starch industry. As these technologies continue to evolve, we can expect even more significant improvements in industrial waste management, making our industries more sustainable and our planet healthier.

https://www.energyportal.eu/news/revolutionizing-starch-factory-effluent-treatment-with-ai-and-machine-learning/64347/

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Flow Battery Capacity, Life Boosted By Using Starch Derivative

July 11th 2023

“We need to develop a sustainable approach with chemicals that we can synthesize in large amounts,” said Imre Gyuk, director of energy storage research at DOEʼs Office of Electricity.

Researchers used a starch derivative to boost the capacity and longevity of a nextgeneration flow battery in a record-setting experiment, the Department of Energy’s Pacific Northwest National Lab, or PNNL, said on Monday. The breakthrough could lead to the scale-up of long-duration fluorenone-based flow batteries, which PNNL unveiled in 2021, according to PNNL. Flow batteries store energy in liquid electrolytes.

The scientists optimized the ratio of chemicals in the flow battery system until it achieved 60% more peak power, PNNL said. They cycled the battery continuously for more than a year with minimal capacity loss, which had never occurred before, the DOE lab said.

“Fluorenone-based flow batteries with the organic additive β-cyclodextrin demonstrate enhanced rate capability, high capacity, and long cycling,” the researchers said in a summary of the study published July 6 in Joule. The study opens an avenue to improve the kinetics of aqueous organic flow batteries by modulating the reaction pathway with a homogeneous catalyst, they said.
“This is a brand new approach to developing flow battery electrolyte,” said Wei Wang, a PNNL battery researcher and the principal investigator of the study. “We showed that you can use a totally different type of catalyst designed to accelerate the energy conversion.”
Also, because the catalyst is dissolved in the liquid electrolyte, it eliminates the possibility of a solid dislodging and fouling the system, Wang said. Commercial flow batteries rely on minerals such as vanadium that are expensive and hard to obtain so researchers are seeking alternatives that use materials that are easily synthesized, stable and non-toxic, PNNL said.
“We need to develop a sustainable approach with chemicals that we can synthesize in large amounts,” said Imre Gyuk, director of energy storage research at DOE’s Office of Electricity.
The study is part of the lab’s research into grid-scale energy storage. It comes as DOE is seeking to cut the cost of long-duration storage by 90%.

Source: https://scitechdaily.com/record-breaking-advances-in-next-generation-flow-battery-design/?expand_article=1

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BENEO Invests Six Million Euros In A Drum-Dryer For Starch

June 28th 2023

BENEO is investing 6 million euros in a new drum-dryer for its rice starch facility in Wijgmaal, which will create 6 new jobs too.

BENEO, a leading manufacturer of functional ingredients for the food, feed and pharmaceutical industry, is investing six million euros. This is to expand the drum-drying capacity of the factory in Wijgmaal near Leuven and thus keep up with the increasing demand for specialized rice starch ingredients.
In a new 1,000 square meter space, a brand new drying drum will be installed to increase the capacity for the production of clean label precooked (or cold water soluble) rice starch with specialized properties/additional benefits by 50 percent. The investment also creates six new full-time jobs in the factory, which already employs 200 people and is proud of its 160-year tradition in Wijgmaal.

“These are exciting times for our factory in Wijgmaal and for the local economy. This latest investment will not only guarantee the future growth of our pre-cooked rice starch range, but also create employment opportunities. As the new drying roller is currently in the start-up phase and should be operational in the coming months, we are already looking for people from the region for these new positions,” says Roland Vanhoegaerden, Operations Managing Director for rice ingredients at BENEO.

Over the past five years, BENEO has seen demand for its pre-cooked starch ingredients increase as they make foods so much more functional. Thanks to the drum-dryer, BENEO can produce rice starch for its customers with strict safety requirements, such as manufacturers of baby food. The dryer itself is built to an ultra-hygienic design and the production area is a separate air-conditioned zone with microbiological filters. In collaboration with the manufacturer of the drum-dryer, BENEO has set up a state-of-the-art, high-care production area that combines the latest energy-efficient drying technology with the very best hygienic design.

In addition, BENEO’s pre-cooked rice starch can be used by food manufacturers to make puddings creamier, make the dough of a pizza crust firmer or thicken soups in a more convenient way.

While the production of rice starch with specialized properties often involves the use of chemicals, BENEO’s advanced drum-drying technique is an entirely physical process. This not only produces a clean label starch, but also cleaner waste water that has less impact on local treatment plants and the environment.

When designing the extension, extra efforts were also made to limit possible noise nuisance to the neighborhood as much as possible. “We do our very best to communicate well with our neighbors and the wider community about any changes to our property in Wijgmaal, we encourage anyone to contact us directly with any questions or concerns and we know from experience that such an approach is appreciated,” says Vanhoegaerden.

BENEO is determined to continue to invest in the factory. The company recently spent 50 million euros in increasing the production capacity of ordinary rice starch and in 2021 it invested half a million euros in expanding freight transport by barge to reduce truck traffic to and from the factory. “Our investments in this factory should make it future-proof and benefit the local communities,” continues Vanhoegaerden.

Source: https://www.robtv.be/nieuws/beneo-uit-wijgmaal-investeert-6-miljoen-euro-in-nieuwe-droogwals-die-voor-6-nieuwe-banen-zorgt-155401

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The Role Of Additives In Starch-Based Edible Coatings

June 26th 2023

The role of additives in starch-based edible coatings.

Edible films and coating are the effective method for preserving fresh food products. A current review focuses on the effects of additives on the physicochemical and bioactive properties of starch-based films and coating.

Starch-based edible films and coating have garnered a significant interest as natural and environmentally friendly solutions.

Edible films and coating provide a potentially effective method for preserving fresh food products by reducing moisture loss, regulating respiration rate, improving surface smoothness, and or preventing microbial growth during their storage. Concurrently, starch has proven for its inexpensive, non-toxic, and widely available attribute for film and coating production. However, this biopolymer has some shortcomings when making films to preserve food. For this reason, the use of additives in its synthesis is frequent.

A current review focuses on the effects of additives on the physicochemical barriers, and bioactive properties of starch-based biodegradable polymer films and coating, as well as how these composites comply with the requirements to produce edible and biodegradable food-based films and coating. These biopolymers perform magnificently as transporters for active ingredients isolated from natural sources and can be introduced into packaged foods at a controlled rate. Furthermore, the additives demonstrated antibacterial and antioxidant capabilities in the films or coating, which would improve the shelf stability of coating or packaged food.

Source: https://www.sciencedirect.com/science/article/abs/pii/S0300944023001935

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Loryma Launches E number-free Adhesion Starch

June 07th 2023

Native wheat starch Lory® Starch Saphir pure optimises coating stability.

The clean-label, wheat-derived, native adhesion starch from food ingredients specialist Loryma stands out from other such products on the market because it is not modified and does not need an E number. Thanks to an innovative production process, Lory® Starch Saphir pure is as efficient as conventional modified starches, and provides optimum adhesion properties for all types of substrate coatings.

By simply declaring it as “wheat starch”, the adhesion starch meets current consumer preference for an easy-to-understand ingredient list without E numbers. This product is a superior version of Lory® Starch Saphir and replaces it in the Loryma range.

Lory® Starch Saphir pure has excellent adhesion properties and forms vapour permeable films. This allows steam to escape through the coating, which binds optimally to various substrates such as meat, fish or plant-based alternatives. There are also no air bubbles or crumbling of the coating. Used as a functional ingredient in batter and tempura or as a pre-dust, Lory® Starch Saphir pure provides a crispy surface while reducing fat absorption in the fryer. The wheat starch itself is neutral in taste and has a low viscosity, making it easy to use.

Dr Markus Wydra, Head of Research & Development Starches & Proteins at the Crespel & Deiters Gorup, was involved in product development and explains: “Until now, manufacturers have had no choice but to forego the use of adhesion starches and their associated benefits if they wanted to declare their product free of E numbers. With the introduction of Lory® Starch Saphir pure, however, we have developed a highly functional wheat-based solution that contributes significantly to a perfectly crisp breading.”

Source: https://crespeldeitersgroup.com/news/loryma-launches-e-number-free-adhesion-starch/

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