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Updated: May 13, 2026

Exploring the Longissimus Muscle: Unraveling its Correlation with Meat Quality in Bos indicus and Crossbred Bulls
Published on: July 12, 2024
Unraveling the underlying mechanism: how processing methods alter muscle protein structure and in vitro digestibility
Jieqian Zhou1, Kyi Kyi Htwe1, Yantao Yin1
1College of Food Science and Technology, Guangdong Ocean University, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Provincial Engineering Technology Research Center of Prefabricated Seafood Processing and Quality Control, Zhanjiang 524088, China.
Abstract:
Food processing is a critical factor influencing protein digestibility and nutritional value. With fresh shrimp (F) as the control,the combined effects of three typical processing methods: raw-frozen (RF), cooked-frozen (FC), and dried (D), on the muscle quality and digestive characteristics of shrimp (Litopenaeus vannamei) were systematically investigated. The results indicated that processing methods modulated the final digestibility of shrimp; among the three typical processing methods for shrimp, raw-frozen (RF) treatment best preserved shrimp muscle quality and digestibility, whereas drying (D) altered the muscle quality and impaired protein digestion. Digestive kinetics results indicated that RF treatment maintains higher rates and degrees of digestion. Principal component analysis (PCA) and correlation analyses identified microstructure, texture, moisture state, and myofibrillar protein structure/oxidation as key factors governing digestibility differences among processing methods. This study provides a theoretical basis for the targeted regulation of shrimp processing technologies to optimize nutritional quality.
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