作　　者： ; ; ; ; ; ; (邓耀杰）;

机构地区： 中山市环境保护技术中心广东中山528402

出　　处： 《广东农业科学》 2013年第17期98-100,F0003,共4页

摘　　要： 采用离心一冷冻干燥组合工艺．比较了不同工艺条件下废酸奶的脱水效果和菌种存活率，及载体种类和添加比例对成品状态和含水率的影响。结果表明：废酸奶经4000r／rmin离心30min预浓缩后，添加质量比为10％的麦芽糊精作为载体，冷冻干燥7h，可以得到含水率低于4．5％、活菌数7×107-6×108CFU／g冻干品的饲料活菌制剂，在0℃的贮存条什下，普通包装可保存268d，真空包装可保存1年左右。由以上工艺可制得具有一定市场前景的功能饲料添加剂，其可提高牲畜免疫力，减少抗生素的使用，同时达到节能、减排的目的。 Using centrifugal-freeze drying combination process, this study compared dehydration effect and strains survival rate under different technological conditions, and studied influence of proteetant and additives on the finished products state and the moisture content. The results proved that centrifugal thickening discarded yogurt at 4 000 r/rain for 30 rain and adding quality ratio of 10% of maltodextrin as dry protectants, freeze-drying for 7 h, we could get the frozen liv bacterium of dried feed preparations with the moisture content under 4.5% and the live bacterium number ranged from 7×107 to 6×108CFU/gCFU/g. In the condition of 0℃, ordinary packaging could store for 268 d, and vacuum packaging cuold store for 1 year. Under above processes, we could obtain funetienal feed additives of certain market prospect and it could improve animals＇ immunity, reduce the use of antibiotics and makes full use of recovery yogurt in order to achieve the purpose of energy conservation and emissions.

关 键 词： 废酸奶 真空冷冻干燥 饲料添加剂 活菌制剂

领　　域： [轻工技术与工程] [轻工技术与工程]