ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

การศึกษาเปรียบเทียบการหาปริมาณ TVB ในปลาสด

เริงฤดี มหาวินิจฉัยมนตรี

รายงานผลการทดลองประจำปี 2515 กองพัฒนาอุตสาหกรรมสัตว์น้ำ หน้า 80-91

2515

บทคัดย่อ

Total volatile bases (TVB) is an important quality index of freshness of fish. Steam distillation and Conway’s micro-diffusion methods are generally used for estimating TVB. This report is concern with a comparative study of these two methods mentioned. The results showed that TVB – mg. N/100 g. fish by Conway’s micro diffusion method is o­nly 57% of the value obtained by the steam distillation method, and the correlation coefficient is 0.83 which shows a satisfactory relation. By using standard solutions of ammonium chloride in varying concentrations, it was found that the steam distillation method gave good recovery percentages for every concentration. Conway’s micro diffusion method gave high recovery percentages of low concentrations of ammonium chloride o­nly. However, Conway’s method, over the range of values found in spoiling fish, gives satisfactory recovery percentages and the two methods show no difference in accuracy. o­ne can select the method most appropriate to the working conditions under which the analysis is to be made.