温度、湿度和丙酸对玉米霉菌生长及毒素产生的影响。

Influence of temperature, moisture, and propionic acid on mold growth and toxin production on corn.

作者信息

Smith P A, Nelson T S, Kirby L K, Johnson Z B, Beasley J N

出版信息

Poult Sci. 1983 Mar;62(3):419-23. doi: 10.3382/ps.0620419.

DOI:10.3382/ps.0620419

Abstract

The influence of temperature and propionic acid on mold growth and toxin production on whole corn with 10, 15, or 20% added water was studied. Levels of propionic acid tested at each moisture level were 0, .025, .05, and .1%. Each flask of corn was inoculated with spores of a citrinin-producing Penicillium spp. and was then incubated for 8 weeks at a constant temperature of 5 C, at 5 C at night and room temperature during the day, or at room temperature both at night and during the day. The corn was then dried, ground, and fed to chicks to determine the presence of citrinin. Regardless of acid level or moisture content, neither mold growth nor toxin production occurred on the corn incubated at 5 C. Both mold growth and toxin production occurred on corn either partially or totally incubated at room temperature but were more prevalent in the latter. Increasing the moisture content resulted in greater mold growth and toxin production, especially on the corn incubated at room temperature. Higher levels of propionic acid were needed to prevent mold growth and toxin production as the moisture content of the corn increased.

摘要

研究了温度和丙酸对添加10%、15%或20%水分的整粒玉米上霉菌生长和毒素产生的影响。在每个水分水平下测试的丙酸水平分别为0、0.025%、0.05%和0.1%。每个装有玉米的烧瓶接种产桔霉素的青霉菌种孢子，然后在5℃恒温下培养8周，或在夜间5℃、白天室温下培养，或在夜间和白天均在室温下培养。然后将玉米干燥、研磨并喂给雏鸡以确定桔霉素的存在。无论酸水平或水分含量如何，在5℃下培养的玉米上均未发生霉菌生长或毒素产生。在部分或全部在室温下培养的玉米上均出现了霉菌生长和毒素产生，但在后者中更为普遍。水分含量增加导致霉菌生长和毒素产生增加，尤其是在室温下培养的玉米上。随着玉米水分含量的增加，需要更高水平的丙酸来防止霉菌生长和毒素产生。