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酸味是舌粒膜受到氢离子刺激而引起的。因此凡是在溶液中能游离出H~ 的化合物都具酸味。但酸味的浓度与酸味的强度之间却不是简单的相互关系,各种酸有不同的酸味感,在口腔中造成的酸感与酸根的种类pH值可滴定酸度、缓冲效应及其他物质,特别是与糖的存在有关。在同样的pH值下,有机酸的酸感要强,最常见的可食酸类在相同浓度下的酸味是不同的。此外,酸感在水溶液中与实际食物中也不同。酸感与缓冲作用有关,在 相似文献
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本文概述了酸味剂在食品工业中的作用和应用,并重点介绍了柠檬酸、磷酸、苹果酸、富马酸、酒石酸、乳酸的性质、产量、生活工艺及发展 相似文献
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Unrestricted or minimally restricted growth of Listeria monocytogenes strain V7 occurred 1) at 13 degrees C in tryptose broth with .125 or .25% gluconic acid or .1 to .3% glucono-delta-lactone, 2) at 13 degrees C in milk with .125 to 1.0% gluconic acid or .5 or 1.0% glucono-delta-lactone, 3) at 35 degrees C in tryptose broth with .125 to .5% gluconic acid or .1 to 5% glucono-delta-lactone, and 4) at 35 degrees C in milk with .125 to 1.0% gluconic acid or .5 to 1.5% glucono-delta-lactone. Limited growth of L. monocytogenes occurred 1) at 13 degrees C with .375 or .5% gluconic acid or .3 or .4% glucono-delta-lactone, 2) at 13 degrees C in milk with 1.5% glucono-delta-lactone, 3) at 35 degrees C in tryptose broth with .75% glucono-delta-lactone, and 4) at 35 degrees C in milk with 2.0% glucono-delta-lactone. Partial to complete inactivation of L. monocytogenes occurred 1) at 13 degrees C in tryptose broth with .75 to 1.5% gluconic acid or .75 or 1.0% glucono-delta-lactone, 2) at 13 degrees C in milk with 1.5% gluconic acid or 2.0 to 3.0% glucono-delta-lactone, 3) at 35 degrees C in tryptose broth with .75 to 1.5% gluconic acid or 1.0% glucono-delta-lactone, and 4) at 35 degrees C in milk with 1.5% gluconic acid or 2.5 or 3.0% glucono-delta-lactone. Milk containing L. monocytogenes was coagulated with gluconic acid, HCl, or rennet, and cottage cheese curd was prepared. After cooking, numbers of the pathogen in curd or whey from rennet-coagulated milk were reduced by ca. 1.5 and 2.5 orders, respectively. Small numbers of survivors appeared in curd but not in whey of HCl-coagulated milk. No survivors were detected in curd or whey of gluconic acid-coagulated milk. 相似文献
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现代食品加工技术在咸味香精产业的发展过程中起着非常重要的作用,技术的应用程度直接决定了产品质量优劣与产品的竞争优势.本文较为详细地介绍了咸味香精生产过程中常用的食品加工技术以及挤压膨化、纳米技术等新技术的应用研究. 相似文献
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HACCP在火锅底料生产中的应用 总被引:1,自引:0,他引:1
为了加强火锅底料的食品安全,通过对其生产过程各个工序进行危害分析,确定危害关键控制点,制定关键控制点的预防措施,对危害进行有效控制,确保火锅底料的安全性。 相似文献
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