高功率脉冲微波协同大豆异黄酮对牛初乳灭菌效果的研究  

Effect of High Power Pulsed Microwave Combined with Soybean Isoflavones on Sterilization of Bovine Colostrum

作　　者：许壮 戴意强 张莉莉[3] 龚兰[3] 印伯星 王英[1,2] 王冉 夏秀东[1,2] XU Zhuang;DAI Yi-qiang;ZHANG Li-li;GONG Lan;YIN Bo-xing;WANG Ying;WANG Ran;XIA Xiu-dong(Institute of Agricultural Product Processing,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;Key Laboratory of Cold Chain Logistics Technology for Agro-product,Ministry of Agriculture and Rural Affairs,Nanjing 210014,China;Institute of Food Safety and Nutrition,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;Yangzhou Yangda Kangyuan Dairy Co.,Ltd.,Yangzhou 225001,China)

机构地区：[1]江苏省农业科学院、农产品加工研究所,江苏南京210014 [2]农业农村部农产品冷链物流技术重点实验室,江苏南京210014 [3]江苏省农业科学院、农产品质量安全与营养研究所,江苏南京210014 [4]扬州市扬大康源乳业有限公司,江苏扬州225001

出　　处：《江西农业学报》2022年第11期100-106,共7页Acta Agriculturae Jiangxi

基　　金：江苏现代农业(奶牛)产业技术体系(JATS[2021]440)。

摘　　要：为降低牛初乳中的微生物数量,同时减少灭菌处理对牛初乳中的免疫球蛋白G(IgG)的影响,通过高功率脉冲微波(HPPM)协同大豆异黄酮(SI)对牛初乳进行处理,分析其对牛初乳中的微生物数量和IgG的影响。结果表明:随着HPPM处理时间的延长和SI添加量的增加,牛初乳中的微生物数量显著降低,且HPPM处理协同添加SI可增强对牛初乳的灭菌作用;在HPPM杀菌时间为6 min与SI添加量为0.4%的条件下,牛初乳中微生物数量由5.04 log CFU/mL降至2.01 log CFU/mL,IgG的保留率为91.6%;与仅用HPPM处理的牛初乳相比,添加大豆异黄酮的牛初乳中残留微生物的生长延滞期显著延长,最大比生长速率和最大菌落数均显著降低。研究证明HPPM结合SI可有效减少牛初乳中微生物数量,并抑制牛初乳中微生物的生长。In this study,high power pulsed microwave(HPPM)technology and the addition of soybean isoflavones(SI)were applied to reduce the number of microorganisms in colostrum and to minimize the effects of sterilization on colostrum immunoglobulin G(IgG).The effects of these treatments on microbial number and IgG in colostrum were analyzed.The results showed that the number of microorganisms in colostrum decreased with the increase of HPPM treatment time and SI addition.In addition,SI addition could enhance the sterilization effect of HPPM treatment on bovine colostrum.Under the conditions of HPPM sterilization time of 6 min and SI addition of 0.4%,the number of microorganisms in bovine colostrum decreased from 5.04 log CFU/mL to 2.01 log CFU/mL,and the retention rate of IgG was 91.6%.Microorganisms in colostrum sterilized by HPPM combined with the addition of SI showed longer growth delays,lower maximum specific growth rates and lower maximum colony counts of residual microorganisms compared to colostrum treated with HPPM only.This study showed that HPPM treatment combined with SI addition was effective in reducing the number and inhibiting the growth of microorganisms in colostrum.

关 键 词：牛初乳 免疫球蛋白G 大豆异黄酮 高功率脉冲微波 生长动力学 

分 类 号：TS252.41[轻工技术与工程—农产品加工及贮藏工程]