乳酸链球菌素是一种天然、高效、安全的食品防腐剂，其应用越来越广泛。
Nisin is a natural, effective and safe food preservative, whose application becomes more and more.
防腐剂的食物，以帮助保持食品质量的一个很具体的方式。
Preservatives help food to retain a foods quality in a very specific way.
现在使用的防腐剂仍以化学防腐剂为主，存在食品安全隐患。
Chemical preservatives give priority in food industry presently, it may cause hidden trouble.
现在使用的防腐剂仍以化学防腐剂为主，存在食品安全隐患。
Chemical preservatives give priority in food industry presently, it may cause hidden trouble.
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