60Coγ辐照对克氏原鳌虾副产物溶解度及结构的影响

Effect of 60 Coγ-ray irradiation on solubility and structure of byproducts of Procambarus clarkii

采用60Coγ射线(吸收剂量为0 kGy、5 kGy、15 kGy、20 kGy、30 kGy和50 kGy)对不同含水量的克氏原鳌虾副产物进行辐照,研究了辐照对克氏原鳌虾副产物的pH、溶解度、游离氨基酸含量及结构特性的影响。结果表明:辐照降低克氏原鳌虾副产物的p H,即pH从7.93降低到7.22;随着吸收剂量及含水量的增加,克氏原鳌虾副产物的溶解度升高,各处理样品中溶解度最高达35.71%,最低为16.23%;辐照能提高克氏原鳌虾副产物中游离氨基酸含量,当吸收剂量为50 kGy时,游离氨基酸含量达到34.66%;通过紫外和红外扫描观察,克氏原鳌虾副产物在辐照前后的吸收特征峰没有太大的变化,但吸收强度发生变化。

The effects of 60Coγ-ray irradition(absorbed dose:0 kGy,5 kGy,15 kGy,20 kGy,30 kGy,and 50 kGy)on the pH,solubility,free amino acid content,and structural characteristics of Procambarus clarkii byproducts were studied.The results showed that irradiation reduced the pH value of the byproducts of the Procambarus clarkii,namely,the pH value decreased from 7.93 to 7.22.With increasing absorbed dose and water content,the solubility of the byproducts of Procambarus clarkii increased,with the highest solubility reaching 35.71%and the lowest being 16.23%in each treated sample.Irradiation could increase the content of free amino acids in the byproducts of Procambarus clarkii,and when the absorbed dose was 50 kGy,the content of free amino acids reached 34.66%.Through UV and infrared scanning revealed that the absorption characteristic absorption peaks of the byproducts did not show significant changes before and after irradiation,but the absorption intensity changed.