长富的巴氏鲜奶和伊利蒙牛的纯牛奶哪个比较好啊???
推荐回答(3个)
有说巴氏奶好的,有说一样好的,搞不懂;我是习惯喝巴氏奶,感觉比较好喝……
巴氏奶&常温奶 巴氏奶是以新鲜牛奶为原料,采用巴氏杀菌法加工而成的牛奶。其主要特点是,采用72~85℃左右的高温进行杀菌,在杀灭牛奶中有害菌群的同时完好地保存了牛奶中的营养物质和纯正口感。
国际上,巴氏奶的杀菌温度通常为72~75℃,杀菌时间为15~20秒;而我国的乳制品生产企业普遍把巴氏消毒奶的杀菌温度逐步提高到120℃甚至更高,而保温时间仍为15秒(通常称超巴氏杀菌)。巴氏杀菌并不能达到商业无菌,灌装也不要求无菌灌装,因此保质期较短。
常温奶的杀菌温度为137~140℃,保温3~4秒。灭菌奶可达到商业无菌,灌装也要求无菌灌装,因此常温奶的保质期很长。
很多消费者认为,巴氏奶比较新鲜,相对于常温奶其营养价值会更高。但实际上,巴氏奶与常温奶的营养成分并无明显差异。目前国内巴氏奶的杀菌温度为120℃甚至更高,几乎与常温奶杀菌温度相当。科学实验证明,巴氏奶即便按照72~75℃的生产工艺来处理,在营养方面,二者也无明显差异。
牛奶中富含的营养很多,主要有以下4种营养素:赖氨酸(一种蛋白质)、钙、维生素B2(核黄素)和维生素B12。虽然在超高温灭菌工艺中会有一些成分失去活性,但并没有降低牛奶中的营养。
1.牛奶中的蛋白质经UHT技术(常温奶主要加工技术)处理后会产生变性,这属于物理变化,但蛋白质的变性对其营养价值没有影响;
2.牛奶中的钙,加热并不会影响人体对它的吸收利用;
3.牛奶经超高温消毒后,的确会破坏某些对热敏感的维生素,但是其破坏程度很低。牛奶中除了维B2和维B12外,其他人类所需的维生素含量较低,而且大多数维生素的获取途径主要是蔬菜和水果。
巴氏奶与常温奶的区别:
巴氏奶是以新鲜牛奶为原料,采用巴氏杀菌工艺加工而成的鲜牛奶,特点是采用72-85℃左右的低温杀菌,保质期一般在7天左右,超高温灭菌(我们通常所说的常温奶)是指在135—150℃的温度下,进行4到15秒的瞬间灭菌处理,完全破坏其中可生长的微生物和芽孢,将牛奶中的有益和有害微生物全部杀死达到商业无茵的要求,保质期一般在6-8个月。从牛奶品质劣化程度看,巴氏奶乳清蛋白质变性率约为15.4%至20%,超高温灭菌奶为91%;巴氏奶B乳球蛋白变性率为 0.43%,超高温灭菌奶为 94.2%。从营养损失程度看,巴氏杀菌奶维生素C损失率为10%至25%,超高温灭菌奶为60%;巴氏杀菌奶维生素B1损失率为5%至10%,超高温灭菌奶为20%;巴氏杀菌奶叶酸损失率为10%,超高温灭菌奶为30%;巴氏杀菌奶蛋氨酸损失率为10%,超高温灭菌奶为34%;巴氏杀菌奶胱氨酸损失率为4.6%超高温灭菌奶为34%;巴氏杀菌奶的可溶性钙损失较少,而超高温灭菌奶的可溶性钙损失较多。
巴氏杀菌奶 超高温灭菌奶
乳清蛋白质变性率 15.4% 91%
B乳球蛋白变性率 0.43% 94.2%
维生素B1损失率 5% 20%
叶酸损失率 10% 30%
蛋氨酸损失率 10% 34%
胱氨酸损失率 4.6% 34%
可溶性钙损失 很少 很多
据欧洲市场调查机构EURO MONITOR 2003年提供的数据表明,巴氏鲜奶的市场份额在加拿大占了99.9%、美国为 99.7%、日本99.3%;英国、荷兰、澳大利亚、新西兰等国的比例亦在95%以上;我国的宝岛台湾,2005年的巴氏奶消费略有下降,约为85%,而常温奶则为15%左右,但2006年又有明显的反弹,上升指数有望达90%,上升的速度、指数明显大于常温奶。另从国外的巴氏奶的售价来看,它的售价比 UHT奶要贵出一半左右,巴氏奶的这种加工方法及其产品消费,已得到人们的认可和广为接受,并已成为全球乳品消费的主流,成为一种时尚的消费。它在大部分的奶业发达国家中所占的市场份额,也是占有绝对优势的。
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