共查询到20条相似文献，搜索用时 273 毫秒
1.
试论我区乳制品的生产和发展 总被引：2，自引：0，他引：2
本文分析了我区乳制品加工的现状，指出原料奶分散，商品率低，乳品加工规模小，新产品开发滞后，是我区乳品业存在的主要问题。指出发挥资源优势，加强科学管理，提高生产水平，控制原料奶质量，调整产品结构，正确进行产品定位，开发科技型等战略措施。 相似文献
2.
生产优质乳品对原料奶的要求 总被引：3，自引：0，他引：3
生产优质乳品的先决条件是要有一个优质原料，即：优质牛奶。但是收奶站或制冷中心所收牛奶并非都是优质奶。要提高产品质量，须对交售的原奶质量进行评价，以此为生产优质乳产品挑选优质牛奶。不新鲜的牛奶加热时凝结，因此，这种牛奶不能消毒或进一步加工。不干净的牛奶含有抗生素或其他化学物质，来源于不健康奶牛，不适合加工，也不能用于消费。乳脂及非脂固形物含量低的牛奶用于加工时，其产量通常较低，或者营养价值较低。因此对原料奶的要求很高。 相似文献
3.
4.
5.
6.
日本日清精细化学药品株式会社正在出售一种对褶皱臂尾轮虫等生物饵料进行二次培养用的饵料—粉末鱼油。该产品是以含有海产鱼所必需的营养成分—ω-3系列的高级不饱和指肪酸EPA.DHA的高精制鱼油作原料,再用抗氧化性优良的卵白缩氨酸进行微胶囊化制成。该产品能很好地强化褶皱臂尾料配比中主要原料组份在上述新项目中潜在 相似文献
7.
学生饮用奶是由我国政府所倡导并通过实施专项计划供给在校学生饮用的一种特定的液态乳制品，它是以优质的鲜牛奶做为主要原料，采用超高温灭菌技术UHT和无菌灌装技术而生产的。因为该产品是为在校学生专门生产的，故而其产品质量的保证就显得尤为重要。本文主要就危害分析及其关键质量控制点管理系统HACCP在学生饮用奶质量控制中的应用作了初步探讨；同时以这一特定的产品为研究对象，对从生产所用的原料奶及其辅料等的进货一直到整个的生产过程中所实际存在的和潜在的危害进行了分析判断和评估，并确立了对最终产品质量有影响的关键控… 相似文献
8.
9.
10.
《北方牧业(奶牛)》2008,(5):62
近日,河南省发改委联合畜牧、工商、质监等多部门开展专项执法检查,对全省原料奶生产、收购及加工环节的价格、质量等问题进行全面检查。
今年年初以来。原料奶价格出现了不同程度的上涨,国内一些地方原料奶收购秩序混乱,部分乳制品企业跨地区高价争抢奶源,少数中小型乳制品企业放松原料奶收购标准。造成质量安全隐患。为了防止奶贩、奶站以及乳制品加工企业在收购、销售原料奶过程中以次充好、短斤缺两等价格欺诈行为, 相似文献
11.
12.
蛋花羊奶皮子配方及加工工艺研究 总被引：1，自引：0，他引：1
通过改进传统奶皮的加工工艺,研究开发出一种营养价值更加全面,外观和风味更好,更易吸收的新型鸡蛋花羊乳奶皮子。本研究以新鲜山羊奶和鸡蛋为主要原料,通过正交试验筛选出了蛋花奶皮子的最佳制作工艺以及原料配方。试验得出:(1)蛋花奶皮子最佳制作工艺:原料乳→过滤、灭菌→均质→加热翻扬搅拌(90℃,2h)→加入鸡蛋糊(2%)→轻搅混匀→保温(4-6h)→停止加热使其自然冷却(约12h)→从锅中倒出奶皮子→干燥→冷藏。(2)蛋花奶皮子最佳原料配方:新鲜羊奶98%,鸡蛋添加量2%,新鲜羊奶≥3.5 kg。研制的新型羊乳制品不仅含有人体所需的亚油酸和亚麻酸,而且还有丰富的DHA和卵磷脂,健脑益智,改善各个年龄组的记忆力,具有丰富的营养价值。 相似文献
13.
目的 对13 家婴幼儿配方羊乳粉企业的生产过程和原辅料中高氯酸盐的污染水平进行测定,并就检测结果进行评估。方法 使用过程分析法对不同生产工艺的婴幼儿配方羊乳粉（简称“婴配羊乳粉”）各个环节生产过程及原辅料进行检测分析,确定婴配羊乳粉中高氯酸盐的主要来源及其贡献率。结果 共检测过程样本104 份及原辅料样本81 份,确定婴配羊乳粉的三种生产工艺均不会产生高氯酸盐,婴配羊乳粉中高氯酸盐的主要来源为原料奶的带入,辅料中高氯酸盐对婴配羊乳粉的贡献率低于26％,辅料中高氯酸盐的高风险因素为含乳原料。结论 婴配羊乳粉三种生产工艺对高氯酸盐的产生没有影响,原料奶是婴配羊乳粉中高氯酸盐的主要来源,辅料中高氯酸盐会带入婴配羊乳粉中,其中含乳原料贡献率大,风险较高。 相似文献
14.
The effect of dietary supplementation with Aurantiochytrium limacinum on lactating dairy cows in terms of animal health,productivity and milk composition 
下载免费PDF全文
下载免费PDF全文 C. A. Moran M. Morlacchini J. D. Keegan G. Fusconi 《Journal of animal physiology and animal nutrition》2018,102(2):576-590
The aim of this study was to investigate the effect of dietary supplementation with the docosahexaenoic acid (DHA )‐rich microalgae, Aurantiochytrium limacinum (AURA ), on a variety of health and productivity parameters in lactating cows. Twenty‐four cows were blocked by parity and number of days in milk and then randomly assigned to a control (CON ; n = 12) group with no algal supplementation, or a treatment group (AURA ; n = 12) provided with 100 g AURA cow?1 day?1 or 16 g DHA cow?1 day?1. A variety of health and productivity measurements were taken, and results indicated that supplementation had no negative effects on animal health in terms of somatic cell count, haematological and biochemical blood parameters, while body condition was marginally improved by algal supplementation. No differences were found for the various production parameters measured; however, a tendency towards increased milk production was observed for the AURA group during the final stage of the study (+4.5 kg cow?1 day?1, day 78–84). The fatty acid profile of milk was improved by supplementation, with significantly lower saturated fatty acids, significantly higher omega‐3 fatty acids and an improved omega‐3/omega‐6 ratio observed when compared to the control group. The amount of DHA in the milk of cows provided 105 g AURA head?1 day?1 was 4.7 mg/100 g milk with a peak transfer efficiency from feed to milk at day 49 of 8.3%. These results indicate that supplementation with 105 g AURA head?1 day?1 resulted in the successful enrichment of milk with DHA without negatively impacting the health or productivity of the animals. 相似文献
15.
16.
Nero LA de Mattos MR Barros Mde A Ortolani MB Beloti V Franco BD 《Zoonoses and public health》2008,55(6):299-305
This study aimed to verify the occurrence of Listeria monocytogenes and Salmonella spp. in raw milk produced in Brazil. On account of the poor microbiological quality of this product, possible interference from the indigenous microbiota in these pathogens was also evaluated. Two-hundred and ten raw milk samples were collected in four important milk-producing areas in Brazil, tested for L. monocytogenes and Salmonella spp. presence, and for enumeration of indicator microorganisms: mesophilic aerobes, total coliforms and Escherichia coli. The interference of the indigenous microbiota in the isolation procedures was also tested, as well the frequency of naturally occurring raw milk strains with antagonistic activity against both pathogens. The pathogens were not isolated in any raw milk sample, but poor microbiological quality was confirmed by the high levels of indicator microorganisms. When present at high levels, the indigenous microbiota generated an evident interference in the methodologies of L. monocytogenes and Salmonella spp. isolation, mainly when the pathogens appeared at low levels. Three-hundred and sixty raw milk strains were tested for antagonistic activity against both pathogens, and 91 (25.3%) showed inhibitory activity against L. monocytogenes and 33 (9.2%) against Salmonella spp. The majority of the antagonistic strains were identified as Lactic Acid Bacteria species, mainly Lactococcus lactis subsp. lactis and Enterococcus faecium, known by antimicrobial substance production. 相似文献
17.
18.
19.
采用国标法检测8份新疆双峰驼乳和7份荷斯坦牛乳中5种长链多不饱和脂肪酸的质量浓度和质量分数。结果表明：新疆双峰驼乳中亚油酸（LA）、α-亚麻酸（ALA）、花生四烯酸（ARA）、二十碳五烯酸（EPA）和二十二碳六烯酸（DHA）的平均质量浓度分别为142.99、18.09、9.83、1.51和1.30 mg/100 g,各种脂肪酸占总脂肪酸的比率依次为2.88%、0.37%、0.20%、0.031%和0.026%;荷斯坦牛乳中LA、ALA、ARA、EPA和DHA的平均质量浓度分别为88.37、5.13、6.57、0.69和4.24 mg/100 g,各种脂肪酸占总脂肪酸的比率依次为2.86%、0.17%、0.21%、0.023%和0.14%。 相似文献
20.
本文探究了日粮中添加裂壶藻粉对奶牛生产性能和乳中DHA含量的影响。将试验奶牛随机分为7组,每组6个重复,进行饲喂试验。结果表明,随着裂壶藻粉用量的增加,乳中DHA含量显著增加(P<0.01),不饱和脂肪酸水平显著提升(P<0.05),且改进了n-3:n-6脂肪酸的比例。添加裂壶藻粉对产奶量无影响,但添加量达300g/(头·d)时乳脂率极显著降低(P<0.01),DHA的转化率从13.50%降至11.60%。本试验条件下,裂壶藻粉在日粮中的适宜添加量为150~250g/(头·d),此时牛奶中DHA含量稳定达到10~20mg/100mL。添加250g裂壶藻粉时,DHA在牛奶甘油三酯sn-2位分布的相对含量达到52.82%,与母乳含量接近。 相似文献