Effect of storage conditions on the occurrence of mycotoxins and nutrient composition in maize grains

IF 0.8 4区农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY

Zemdirbyste-agriculture Pub Date : 2022-12-30 DOI:10.13080/z-a.2022.109.046

Eimantas Venslovas, A. Mankevičienė, Y. Kochiieru, Lauksmė Merkevičiūte-Venslovė, S. Janavičienė

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引用次数: 1

Abstract

The aim of this study was to determine how citrinin (CIT), aflatoxins (AFL B1+B2+G1+G2 ), ochratoxin A (OTA), zearalenone (ZEA), and deoxynivalenol (DON) concentrations vary under different maize grains storage conditions and how they affect grain quality. Analyses of mycotoxins: AFL B1+B2+G1+G2 , CIT, DON, ZEA, and OTA, and grain quality: dry matter (DM) content, crude protein (CP), crude ash (CA), crude fibre (CF), crude fat, and starch, were performed at the beginning of the experiment and then after 3 and 6 months of storage. The results of the experiment showed that the duration of storage had the greatest influence on the formation of AFL B1+B2+G1+G2 when an average concentration increased about three times after 6 months of storage, regardless of storage conditions. The duration of storage also had a significant effect on CIT accumulation, as it was not detected in the maize grain samples before the experiment, and after 6 months of storage, the concentration ranged from 93 to 184 µg kg –1 . It was also noted that there is no risk of an increase in the concentrations of DON, ZEA, and OTA in maize grains when dried grains are stored well (up to 7% moisture content). The DON concentration after 6 months of storage at 12°C and 20°C and in the warehouse decreased about two times, while at 4°C after 3 months of storage it also decreased, and then after 6 months it increased to the same concentration as at the beginning of the experiment. Throughout the experimental period, ZEA and OTA concentrations were slightly above or below the limit of detection (LOD). The nutrient composition after 6 months of storage was only different after storage at 20°C temperature. The increase in starch content was accompanied by an increase in the DM content. Strong positive correlations were observed: as the concentrations of AFL B1+B2+G1+G2 and CIT increased, so did the DM content, while the crude protein content increased with increasing the DON concentration.

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贮藏条件对玉米籽粒真菌毒素发生及营养成分的影响

本研究旨在研究不同玉米贮藏条件下柑桔素(CIT)、黄曲霉毒素(AFL B1+B2+G1+G2)、赭曲霉毒素A (OTA)、玉米赤霉烯酮(ZEA)和脱氧腐血毒素醇(DON)浓度的变化及其对籽粒品质的影响。在试验开始及贮藏3个月和6个月后分别测定真菌毒素:AFL B1+B2+G1+G2、CIT、DON、ZEA和OTA以及籽粒品质:干物质(DM)含量、粗蛋白质(CP)、粗灰分(CA)、粗纤维(CF)、粗脂肪和淀粉含量。实验结果表明，无论贮藏条件如何，贮藏时间对AFL B1+B2+G1+G2的形成影响最大，贮藏6个月后平均浓度增加约3倍。贮藏时间对CIT积累也有显著影响，因为实验前玉米籽粒样品中未检测到CIT，贮藏6个月后，CIT浓度在93 ~ 184µg kg -1之间。还注意到，当干燥谷物储存良好(含水量高达7%)时，玉米籽粒中DON、ZEA和OTA的浓度没有增加的风险。在12°C、20°C和仓库存放6个月后，DON浓度下降了约2倍，在4°C存放3个月后，DON浓度也有所下降，6个月后又回升到与实验开始时相同的浓度。实验期间，ZEA和OTA浓度均略高于或低于检测限(LOD)。贮藏6个月后的营养成分仅在20℃贮藏后有所不同。淀粉含量的增加伴随着DM含量的增加。随着AFL B1+B2+G1+G2和CIT浓度的增加，DM含量也随之增加，粗蛋白质含量则随着DON浓度的增加而增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Zemdirbyste-agriculture AGRICULTURE, MULTIDISCIPLINARY-

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Zemdirbyste-Agriculture is a quarterly scientific journal which covers a wide range of topics in the field of agricultural sciences, agronomy. It publishes articles of original research findings in the English language in the field of agronomy (soil and crop management, crop production, plant protection, plant breeding and genetics, biotechnology, plant nutrition, agrochemistry, soil science, microbiology etc.) and related areas. Articles are peer-reviewed. Review, debating papers as well as those of a methodological nature will also be considered.