Quality changes of anchovy (Stolephorus heterolobus) under refrigerated storage of different practical industrial methods in Thailand.

Quality changes of anchovy (Stolephorus heterolobus) muscle during 7 days of refrigerated storage with ice and without ice were studied using several indicators: changes of ATP degradation products, K-value, TVB-N, TMA-N, Lactic acid, biogenic amines, sensory and microbiological analysis. During 7-day of refrigerated storage with ice and without ice, K-value, TVB-N, TMA-N and D, L-lactic acids contents increased with longer storage time (p ≤ 0.05). Major biogenic amines found in anchovy muscle during refrigerated storage were cadaverine, agmatine and tyramine, followed by putrescine and histamine. Skin and external odour by sensory evaluation, progressive decreases were observed as refrigeration time progressed. Storage of anchovy with ice resulted in a better maintenance of sensory quality, better control microbial activity, and the slowing down of biochemical degradation mechanisms. This result introduces the use of refrigerated storage with ice as a practical preliminary chilling for anchovy during industrial processing.