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首页> 外文期刊>African Journal of Food, Agriculture, Nutrition and Development >Shelflife of whole fresh Lake Malawi tilapia ( Oreochromis species – Chambo ) stored in ice
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Shelflife of whole fresh Lake Malawi tilapia ( Oreochromis species – Chambo ) stored in ice

机译：整个新鲜的马拉维湖罗非鱼（奥利克罗非鱼种– Chambo）的保存期限都保存在冰中

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Lake Malawi Tilapia (chambo) fish species is widely consumed and forms the most important commercial fishery in Lake Malawi. However, as a highly perishable commodity, knowledge regarding how long fresh fish would remain in acceptable and safe condition in storage is indispensable for consumers and processors. Presently, no such information exists for the Lake Malawi Tilapia in Malawi. A study was therefore conducted to estimate shelflife of whole fresh Lake Malawi Tilapia stored in ice (0oC) for 21 days. Sensory, microbiological and pH analyses were conducted to describe changes in quality and freshness of the fish with storage time in ice. Shelflife of the fish was estimated between 16 and 18 days. A strong linear correlation (R2=0.95) was observed between sensory demerit scores and storage time in ice. Total bacteria viable counts and pH at the time of sensory rejection of the fish were 1.6×107 cfu/g/cm2 and5.84 respectively. Pseudomonas and Micrococcus bacteria were found in relatively high numbers throughout the storage period. The study demonstrated that like other tropical fish, Lake Malawi Tilapia has a relatively longer shelflife. The long storage life in ice of Lake Malawi Tilapia is advantageous to most small scale fresh fish sellers and processors especially from rural areas in Malawi who solely depend on ice as a sole and affordable way of preserving fresh fish.
机译：马拉维湖罗非鱼（chambo）鱼类被广泛消费，并构成马拉维湖最重要的商业渔业。然而，作为高度易腐烂的商品，对于鲜鱼将在可接受的安全条件下保存多长时间的知识，对于消费者和加工者来说是必不可少的。目前，马拉维的马拉维罗非鱼湖尚无此类信息。因此，进行了一项研究，以估计整个冰层（0oC）中存放21天的新鲜马拉维罗非鱼湖的保质期。进行了感官，微生物学和pH值分析，以描述鱼类在冰中储存时间随质量和新鲜度的变化。鱼的保质期估计在16至18天之间。在感觉缺陷评分和冰中储存时间之间观察到强线性相关性（R2 = 0.95）。鱼感觉排斥时的总细菌存活数和pH分别为1.6×107 cfu / g / cm2和5.84。在整个存储期间，发现假单胞菌和微球菌的数量相对较高。研究表明，马拉维罗非鱼湖与其他热带鱼一样，具有相对较长的保存期限。马拉维罗非鱼湖在冰中的长期保存对大多数小规模的鲜鱼销售者和加工者特别是来自马拉维农村地区的小鱼出售者和加工者有利，后者仅依靠冰作为唯一和负担得起的鲜鱼保存方式。

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