乳酸链球菌素在食品工业中的应用

乳酸链球菌素是某些乳酸链球菌产生的一种天然食品防腐剂。是我国９０年代高科技生物工程产品。本文介绍该防腐剂在乳制品、罐头食品、植物蛋白食品中的应用试验结果。包括用量、方法和效果。对相关的食品企业具有一定的参考价值。     

乳酸链球菌素在食品工业中的应用

乳酸链球菌素是某些乳酸链球菌产生的一种天然食品防腐剂，本文介绍该防腐剂在乳制品、罐头食品、植物蛋白食品中的应用试验结果。包括用量、方法和效果。     

乳酸链球菌素在扒鸡中的应用

研究天然食品防腐剂乳酸链球菌素(Nisin)在扒鸡中的防腐应用。结果表明,Nisin既改进了扒鸡的食用品质,又达到产品规定的保质期。     

乳酸链球菌素在食品工业中的应用（一）

乳酸链球菌素（Nisin）亦称乳链菌肽或音译为尼辛。是某些乳酸链球菌侣beptococcusInCtis）产生的一种多肽物质，由爿个氨基酸残基组成。成品为灰白色或略带有黄色固体粉末。它是一种高效、无毒、安全、无副作用的天然食品防腐剂。Nisin在英国已有40多年的应用历史。全世界约有50个国家和地区得到广泛应用。在国内，由中科院微生物研究所、浙江天台制药厂银象分厂和中国食品发酵研究所联合开发成功。是我国90年代高科技生物工程产品。94年3月通过中科院科技成果鉴定，并被列人95年国家级火炬计划，填补了国内的空白。现由浙江天台制药厂银…     

乳酸链球菌素在肉制品中的应用

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.本文综述了乳酸链球菌素的特性及在肉制品中的应用,并对其应用前景进行展望.     

乳酸链球菌素（Nisin）及其在食品工业中的应用

介绍了乳酸链球菌素(Nisin)性质，综述了乳酸链球菌素(Nisin)在食品防腐中的应用，以及对微生物防腐剂的发展趋势进行展望。     

乳酸链球菌素在食品中的应用研究

乳酸链球菌素是一种理想的天然食品防腐剂。综述了乳酸链球菌素在食品工业中的应用,并对其应用的前景进行了展望。     

乳酸链球菌素在糟辣椒中的应用

将天然食品防腐剂乳酸链球菌素运用在传统食品－糟辣椒中,提高了其质量和保质期。     

乳酸链球菌素（Nisin）在食品中的应用

乳酸链球菌素（Ｎｉｓｉｎ）在食品中的应用姚日标（浙江天台制药厂银象分厂浙江天台，３１７２００）乳酸链球菌素又名乳链菌肽（英文名Ｎｉｓｉｎ）是由乳酸链球菌产生的一种多肽物质，是一种优良的天然的食品防腐剂，该产品能有效地抑制引起食品腐败的革兰氏阳性腐败菌...     

乳酸链球菌素在豆奶中的应用

乳酸链球菌素是一种天然、高效、安全的食品防腐剂,研究了乳酸链球菌素在豆奶饮料中的应用效果。结果表明：乳酸链球菌素在豆奶中起到明显的防腐保鲜作用,同时有改善品质的效果。     

乳酸在生鲜牛肉加工中的应用

主要论述乳酸在生鲜牛肉加工中的作用,其中胴体减菌作用、保鲜作用、护色作用、嫩化作用得到重点的阐述。希望为冷鲜牛肉的生产、品质的改善提供理论依据和技术支持。     

Nutritional profile of restructured beef steak with added walnuts

Amino acid, fatty acid profile, cholesterol, vitamin E and mineral contents were assessed in restructured beef steak with 20% added walnut (20W). Compared with control restructured beef steak (0% added walnut), the product with added walnut presented a lower (P < 0.05) lysine/arginine ratio, larger (P < 0.05) quantities (mg/100 g product) of monounsaturated (MUFA) and n3 polyunsaturated (PUFA) fatty acids (mainly -linolenic acid), a lower (P < 0.05) n6/n3 PUFA ratio and a higher (P < 0.05) polyunsaturated/saturated fatty acid ratio. The replacement of raw meat material by walnut reduced (P < 0.05) the cholesterol content and increased (more than 400 times) the amount of γ-tocopherol. Iron, calcium, magnesium and manganese contents of 20W sample were greater (P < 0.05) than in the control. Some changes induced by added walnut in the nutritional quality of the restructured product may present health benefits.     

乳酸及其衍生物应用现状与发展前景

<正> 乳酸作为一种重要的有机酸,属高新技术产品,可作为食品的风味酸味剂、防腐剂和有机合成材料等,在食品、饮料、化工、医药等行业有着广泛的用途。随着乳酸应用领域不断拓展,世界年需求量以8～10%的速度递增,我国需求量也在不断扩大。     

Physicochemical and sensory characteristics of restructured beef steak with added walnuts

The effects of different proportions (0, 5, 10, 15%) of added walnuts on the physicochemical and sensory characteristics of restructured beef steak were evaluated. The addition of 10 and 15% walnut reduced (P<0.05) cooking loss. Increasing proportions of walnut in the beef steak increased (P<0.05) water binding and reduced (P<0.05) fat binding properties. The addition of walnut did not affect (P>0.05) textural properties in uncooked restructured beef steak, but in cooked products Kramer shear force and bind strength were reduced (P<0.05) when 10% or more of walnut was added. Product morphology characteristics suggest that walnut interferes with the formation of protein network structures. Restructured steaks made with added walnut presented acceptable sensory properties. Incorporation of nuts in meat products can be use to confer potential heart-healthy benefits (Spanish Patent Application 200300367).     

Relationship between proteolytic changes and tenderness in prerigor lactic acid marinated beef

A meat tenderising procedure involving injection of a lactic acid solution into prerigor muscle was investigated using beef M pectoralis profundus. The distribution of lysosomal enzymes in subcellular fractions, densities of myofibrillar protein bands after SDS‐PAGE and shear force were measured in non‐injected, 0.5 M and 1.0 M lactic‐acid‐injected samples during a 21 days ageing period. The activities of cathepsin B + L and β‐glucuronidase in the soluble fraction increased with level of lactic acid and with time post‐mortem (P < 0.001). Lactic acid and storage decreased densities of SDS‐PAGE bands migrating at the position of myosin heavy chain (MHC) and α‐actinin and increased densities of a 150 kDa band (P < 0.01). SDS‐PAGE of isolated perimysium cleaved with CNBr showed proteolytic cleavage of collagen after prolonged storage. Lactic acid injection significantly reduced shear force (P < 0.001). The cathepsin B + L activity in the soluble fraction correlated to shear force (r = −0.8), the degradation of MHC and α‐actinin (r = −0.88 and −0.90) and the generation of the 150 kDa fragment (r = 0.90) but not to the generation of a 31 kDa fragment (r = 0.05). A major part of the tenderness improvement after lactic acid injection was complete at 24 h post‐mortem, and was therefore due to a rapid process, eg pH‐induced swelling of the muscle structure. The data on enzyme activities and protein degradation, however, suggested that the action of lysosomal cathepsins also contributed to textural changes. © 1999 Society of Chemical Industry     

乳酸和二氧化氯对牛胴体和分割牛肉微生物的去污染效果研究

采用不同浓度的乳酸和二氧化氯对冷却前的牛胴体进行喷洒处理,研究了喷洒后对牛胴体及成熟后脖肉中微生物的去污染效果。结果表明,浓度在2.5%以下的乳酸对胴体及其成熟后的脖肉无显著的减菌效果。浓度在100mg/kg及以上的二氧化氯能显著(p<0.05)减少牛胴体表面和成熟后脖肉的菌落总数和大肠菌群;浓度为200mg/kg的二氧化氯比100mg/kg的减菌效果更显著(p<0.05)。     

Consumer acceptance and steak cutting yields of beef top sirloin and knuckle subprimals

Beef knuckles (n = 150) and center-cut top sirloin butts (n = 150) were used to determine portion-controlled steak cutting yields, palatability characteristics, and consumer acceptance of rectus femoris (RF), vastus lateralis (VL), and gluteus medius (GM) steaks. Steak yields were higher (P < 0.05) for top sirloins than knuckles. Trained sensory panel ratings for overall tenderness, juiciness, and flavor were similar between RF and GM. Consumer panel ratings for tenderness and juiciness were higher (P < 0.05) for GM than RF; however, consumer perceptions of overall like and flavor were similar for GM and RF. Vastus lateralis received lower (P < 0.05) trained panel and consumer ratings for all traits than either RF or GM. Palatability of VL will need improvement to be a viable foodservice offering. Yet, these data suggest that RF would amply substitute for GM in foodservice settings, and that knuckle steak yields would be adequate for foodservice applications.