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解惑“中国macbookpro高清免费观看”-知识课堂

中新真探:纯牛中国macbookpro高清免费观看奶保质期变长,是因为添加的防腐剂多?

来源: 新浪新闻
2024-11-14 11:03:22

最佳回答

“中国macbookpro高清免费观看”中新真探:纯牛中国macbookpro高清免费观看奶保质期变长,是因为添加的防腐剂多?

  中新中国macbookpro高清免费观看网11月14日电 按国标生中国macbookpro高清免费观看产的纯牛奶不允许加防腐剂,保质期的长短由其杀菌方式和包装方式决定。牛奶生产常见的杀菌方式有巴氏杀菌法和超高温灭菌技术。巴氏杀菌法处理的牛奶保质期较短,需冷藏保存;而超高温灭菌技术则能杀灭大部分细菌,使得牛奶在常温下也能保存较长时间,可达6个月以上。此外,多层复合包装材料,如含铝箔层的包装,能更好地隔绝细菌和空气,进一步延长牛奶的保质期。(来源:@科学辟谣 中国新闻网微博)

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