جستجوی مقالات مرتبط با کلیدواژه « روش اسیدی » در نشریات گروه « صنایع غذایی »

Shark (Carcharhinus dussumieri) is one of the dominant fishing in the southern sea of Iran. Cartilage is considered as fish scum which is obtained from shark fillet production process and ability convert to gelatin by chemical method. This search performed in two stages. In the primary stage, effect of three (NaOH) concentration (0.1, 0.2 and 0.3 M) and three (CH3 COOH) concentrations (0.1, 0.5 and 1M) in 60˚ temperature and 6 hours time were studied on the yield of gelatin extraction. In the second stage, the optimum acid and alkaline concentrations were exposed to different time (6, 12 hours) and temperature (60, 70 and 80˚ C) conditions. This statistics results from normal data means which were obtained from Duncan’s one way variance analysis indicated that 0.3 M alkaline and 1M acid concentrations have higher yield, how ever no significant difference was observed between them(p>0.05). In the acidic method 80˚ C temperature and 12 hours time treatment, and alkaline method 80˚ temperature and 6 or 12 hours time treatment without significant difference was observed between them, showed higher yield. More over, the results showed that between optimal yield acidic method and optimal yield alkaline method was not significant difference. There fore, it is concluded that the alkaline method with 0.3M concentration, 80˚ C temperature and 12 hours time period (with mean yield: 16.34%) is the best method for produce gelatin from shark cartilage (Carcharhinus dussumieri).