Ultrasound speeds up hemp protein enhancement by 92% with better nutrition

Hemp protein functional properties, amino acid profile, and growth promotion of Lactiplantibacillus plantarum via ultrasound-induced Maillard reaction with Chito-oligosaccharides.

Food chemistry • • Moderately Relevant
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AI Summary

This research explores how ultrasound technology can rapidly improve the functional properties of hemp protein through a process called the Maillard reaction, which chemically bonds proteins with chito-oligosaccharides (sugar compounds derived from shellfish shells). Using ultrasound, researchers achieved in just 1 hour what would normally take 12 hours, a 92% reduction in processing time, while reaching similar levels of chemical modification. This breakthrough demonstrates how sound waves can significantly speed up food processing and enhance protein quality at an industrial scale.

The enhanced hemp protein showed remarkable improvements in practical food applications: solubility nearly doubled (from 36% to 72%), and the protein became much better at forming and stabilizing emulsions—critical properties for creating creamy dressings, plant-based foods, and nutritional supplements. The modified protein retained 83% of its original amino acids while gaining new functional benefits, showing that the process doesn't destroy nutritional value. Additionally, the conjugated hemp protein demonstrated enhanced antioxidant activity across multiple laboratory assays, suggesting potential health benefits from consumption.

Perhaps most significantly, the modified hemp protein strongly promoted the growth of Lactiplantibacillus plantarum, a beneficial gut bacterium, indicating improved prebiotic functionality. This means the product could support healthy gut microbiota, a relationship increasingly linked to immune function, digestion, and overall wellness. These findings open new possibilities for developing hemp-based functional foods and supplements that are both more efficient to produce and nutritionally superior to current offerings."

📄 Original Abstract

This study developed an ultrasound-induced Maillard reaction (UMR) to conjugate hemp protein (HP) with chito-oligosaccharides (COS) and evaluate the resulting functional and biological enhancements. The optimal UMR condition (90 °C, 1 h) achieved an equivalent degree of glycation (13.5%) to conventional heating (12 h) while reducing processing time by 92%. This corresponds to an 11-fold increase in glycation rate compared to conventional heating (0.225 vs. 0.020%/min). The HP-COS conjugates exhibited significant functional improvements, with increased solubility (from 36% to 72%), attributed to ultrasound-induced protein unfolding. This structural change boosted the emulsifying activity index (from 11.2 to 21.6 m2/g) and emulsion stability index (from 11.1 to 20.1 min). The conjugates showed enhanced antioxidant activity (DPPH, ABTS, FRAP assays), retained 83% of the total amino acid content, and significantly promoted the growth of Lactiplantibacillus plantarum N14, demonstrating improved prebiotic functionality due to enhanced nutrient accessibility and the presence of fermentable oligosaccharides.

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