College of Food Science and Technology, Shanghai Ocean University, Shanghai, China.
Shanghai Ocean University, Shanghai Aquatic Products Processing and Storage Engineering Technology Research Center, Shanghai, China.
J Sci Food Agric. 2022 Jun;102(8):3099-3106. doi: 10.1002/jsfa.11651. Epub 2021 Dec 9.
Large yellow croaker (Pseudosciaena crocea) has important commercial value because of its high nutritional value and delicious taste. However, large yellow croaker is readily affected by microorganisms during storage, which causes the corruption of muscle tissue. Both chitosan (CS) and apple polyphenols (APs) are bio-preservatives, which can effectively inhibit the growth of microorganisms and improve the quality of large yellow croaker. The effects of 10.0 and 20.0 g L CS combined with 1.0 g L AP coating on the quality and microbial composition of large yellow croaker during ice storage were investigated respectively.
CS + AP coating restrained the increase of total volatile basic nitrogen (TVB-N) and biogenic amines, slowed down the rise of K-value and retarded the growth of microorganisms. The bacteriostatic effect was positively correlated with the concentration of CS. Through the analysis of high-throughput sequencing (HTS), the microbial diversity was changed respectively. The proportion of Shewanella was significantly decreased by CS + AP coating treatment and Pseudomonas was the dominant microorganism in spoiled samples. Compared with the shelf-life of the control group (8 days), 20.0 g L CS combined with 1.0 g L AP coating treatment could extend the shelf-life of large yellow croaker for another 8 days.
CS combined with AP coating may be considered a promising method to delay the biochemical changes of ice stored large yellow croaker and extend its shelf life. © 2021 Society of Chemical Industry.
大黄鱼（Pseudosciaena crocea）因其营养价值高、味道鲜美而具有重要的商业价值。然而，大黄鱼在贮藏过程中容易受到微生物的影响，导致肌肉组织腐败。壳聚糖（CS）和苹果多酚（APs）都是生物防腐剂，可有效抑制微生物的生长，提高大黄鱼的品质。分别研究了 10.0 和 20.0 g/L CS 与 1.0 g/L AP 复合涂层对冰藏大黄鱼品质和微生物组成的影响。
CS+AP 涂层抑制了总挥发性碱性氮（TVB-N）和生物胺的增加，减缓了 K 值的上升，并延缓了微生物的生长。抑菌效果与 CS 的浓度呈正相关。通过高通量测序（HTS）分析，微生物多样性发生了变化。CS+AP 涂层处理使希瓦氏菌的比例显著降低，假单胞菌是变质样品中的优势微生物。与对照组（8 天）的货架期相比，20.0 g/L CS 与 1.0 g/L AP 复合涂层处理可使大黄鱼的货架期延长 8 天。
CS 与 AP 复合涂层可能被认为是一种延缓冰藏大黄鱼生化变化、延长货架期的有前途的方法。© 2021 化学工业协会。
