提高扇贝制品安全水分含量的初步研究

取活体栉孔扇贝(壳高55—65mm)，剖取贝柱或汽蒸开壳后取贝肉，制成3类不同水分活度(aw)的试样，测定其制品水分含量和水分活度的关系以及贮藏试验中变质菌类型。结果表明，对于L—aw型制品(0．60＜aw＜0．70)，传统制品干贝的安全水分含量为17．3％以下，添加糖、盐等调味品后制品安全水分含量提高到20．3％，使用山梨酸钾作防霉剂进一步提高到24．1％。对于M—aw型制品(0．70＜aw＜0．90)，采取真空包装，制品安全水分含量可提高到38％。对于H—aw型制品(0．90＜aw＜0．95)，采取降低aw和pH、热加工、真空包装、二次低温加热杀菌的联合措施，制品安全水分含量可达50％。因此，采用适当的科学方法，扇贝制品的安全水分含量是可以提高的。

Effects of increasing safe moisture on quality of scallop product

The adductors were collected from the living Fairer' scallop and three levels of water activities aw were designed. By testing the relationship between moisture and aw in the scallop adductors and bacteria test, the results are that: 1) for the scallop product of Low-aw(0.60