Ottati M, Gutiérrez M, Bello R
Instituto de Ciencia y Tecnología de Alimentos, Facultad de Ciencias, Universidad Central de Venezuela, Caracas.
Arch Latinoam Nutr. 1990 Sep;40(3):408-25.
Fish silage was produced by microbial means from a mixture of several fish species which are not used for human consumption, and form part of the shrimp by-catch. The fish was mixed with a carbohydrate source (molasses) and a starter culture of Lactobacillus plantarum 8014. The mixture was fermented at 30 +/- 2 degrees C. Several tests were undertaken to determine the optimal conditions and concentration of molasses (5, 10 and 15%) and Lactobacillus (0.5, 1.0, 2.5, 5.0 and 10.0%). Results indicated that 1% of microorganisms and 15% of molasses were the optimal proportions to produce a stable fish silage. The production process and stability study of fish silage were followed through chemical, physical and microbiological tests. As findings revealed, the first six days of the process are related to acid production, pH reduction and microbial control, while after this period the process is basically related to protein hydrolysis. In addition, sensory tests of flavor and color were performed. The results of this study suggest the feasibility of utilizing this marine resource at present discarded, through a technological scheme, to produce fish silage for animal feed.
鱼青贮饲料是通过微生物方法，以几种非食用鱼类的混合物为原料生产的，这些鱼是虾类副渔获物的一部分。将鱼与碳水化合物源（糖蜜）和植物乳杆菌8014的发酵剂混合。混合物在30±2摄氏度下发酵。进行了多项试验以确定糖蜜（5%、10%和15%）和乳酸菌（0.5%、1.0%、2.5%、5.0%和10.0%）的最佳条件和浓度。结果表明，1%的微生物和15%的糖蜜是生产稳定鱼青贮饲料的最佳比例。通过化学、物理和微生物测试对鱼青贮饲料的生产过程和稳定性进行了研究。研究结果显示，该过程的前六天与产酸、pH值降低和微生物控制有关，而在此之后，该过程主要与蛋白质水解有关。此外，还进行了风味和颜色的感官测试。本研究结果表明，通过一项技术方案利用目前被丢弃的这种海洋资源来生产用于动物饲料的鱼青贮饲料是可行的。
