聂增宇,胡文林,许世锦,谢凤娇

（广东天益生物科技有限公司，广东湛江 524300）

摘要：本文通过试验研究功能性红曲发酵浓缩液的离心喷雾干燥工艺，采用单因素试验，筛选出适宜的助干剂种类及添加量、喷雾干燥进出风温度、进料流量和离心转速。试验结果表明适宜的工艺条件为：助干剂种类为麦芽糊精及其添加量为9.0%，进风温度为212.8～216.0 ℃，出风温度为85.1～86.2 ℃，进料流量为4.5 L/min，离心转速为18 000 r/min。在此工艺条件下，干燥前喷雾液 Monacolin K（MK）开环率为 82.11%，制备成粉末后 MK 开环率为75.67%，MK开环率降低了6.44%，且产品极少粘壁，呈枣红色粉末，形态细腻，较易吸潮且粘手。本试验结果为工业化大生产提供数据支撑。

关键词：功能性红曲 ；离心喷雾干燥；开环Monacolin K

中图分类号：TQ925.7   文献标识码：A   文章编号：1674-506X（2021）06-0054-0006

Application of Centrifugal Spray Drying Technology to Industrially Prepare Functional Red Yeast Rice Powder

NIE Zeng-yu, HU Wen-lin, XU Shi-jin, XIE Feng-jiao

（Guangdong Tianyi Biotechnology Co., Ltd., Zhanjiang Guangdong 524300, China）

Abstract：In this paper, the centrifugal spray drying technology of functional Monascus fermentation concentrate was studied by experiments, and single factor experiments were carried out to select the suitable type and amount of drying aids, the temperature of inlet and outlet air, the flow rate of feed and the speed of centrifugal rotation. The results showed that the optimum technological conditions were as follows: Maltodextrin and its additive amount were 9.0% , inlet air temperature was 212.8～216.0 ℃, outlet air temperature was 85.1～86.2 ℃, inlet flow rate was 4.5 L/min, centrifugal speed was 18 000 r/min. The ring opening rate of spray solution Monacolin K (MK) before drying is 82.11%, the ring opening rate of MK after powder preparation is 75.67%, the ring opening rate of MK is reduced by 6.44%, and the product has little adhesion to the wall and is a bordeaux powder with fine shape, easy to absorb moisture and stick to hand. The test results provide data support for large-scale industrial production.

Keywords：functional Monascus; centrifugal spray drying; open loop Monacolin K

doi：10.3969/j.issn.1674-506X.2021.06-009

收稿日期：2021-10-11

基金项目：广东省科技攻关计划（粤知产合同［2018］11号-37）

作者简介：聂增宇（1986-），男，本科，助理工程师。研究方向：天然发酵红曲产品的生产及研究。

引文格式：聂增宇,胡文林,许世锦,等.工业中应用离心喷雾干燥技术制备功能性红曲粉[J].食品与发酵科技,2021,57(6):54-59.