Effect of Various Hot-Air Drying Processes on Clam Ruditapes philippinarum Lipids: Composition Changes and Oxidation Development.

• Autores: Zhong-Yuan Liu, Da-Yong Zhou, Xin Li Ke Zhou, Fa-Wen Yin, Qi Zhao, Hong-Kai Xie, De-Yang Li, Bei-Wei Zhu, Tong Wang, Fereidoon Shahidi
• Localización: Journal of food science, ISSN 0022-1147, Vol. 83, Nº 12, 2018, págs. 2976-2982
• Idioma: inglés
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• Resumen

  • Clam Ruditapes philippinarum was processed by hot-air drying and the changes of its lipids were evaluated by analyzing lipid classes, phospholipid classes, fatty acids, as well as oxidation parameters including peroxide value (POV), thiobarbituric acid-reactive substances (TBARS) value, total oxidation value (TOTOX), and oxidation test (OXITEST). The hot-air drying process reduced the contents of triacylglycerol, phosphatidylcholine, and phosphatidylethanolamine, indicating the hydrolysis of lipids. Meanwhile, the hot-air drying process significantly decreased the proportion of n-6 polyunsaturated fatty acid (PUFA), and consequently increased the PUFA ratio of n-3/n-6. Interestingly, the POV, TBARS and TOTOX decreased after the hot-air drying process. However, significant decline of the induction period for the dried clam tissue at elevated temperatures indicated their higher oxidation level, poor oxidative stability and reduction of shelf-life. Therefore, OXITEST method turned out to be an effective tool for estimating the level of lipid oxidation for hot-air dried clam.; © 2018 Institute of Food Technologists®.