2种处理方式对柑橘皮主要营养物质及卫生指标的影响OA

[Objectives]Two processing methods for citrus peels including sun-drying and silage-sun-drying were compared to provide a scientific reference for the development and utilization of Yunnan citrus peel as a feed additive.[Methods]The citrus peels mainly included oranges and tangerines were collected from the market in Yunnan from November 2023 to February 2024 and processed with sun-drying and silage-sun-drying.Structural changes under the different process were examined with microscopy.The content of key nu-tritional components,pesticide residues,and major mycotoxins were determined.[Results]Silage-sun-drying more effectively destroyed the fibrous structure of citrus peel and increased the content of six main nutritional components including the crude protein(P＜0.05),crude fat,crude ash,crude fiber,calcium,and phosphorus compared with sun-drying.Both processing methods reduced pesticide residues in the peel,with the silage-sun-drying method having a better effect.The content of three major mycotoxins including aflatoxin B1,deoxyniva-lenol,and zearalenone in citrus peel processed with two methods was far below the hygiene standard of feed.[Conclusions]Silage-sun-drying can better promote the decomposition of fibers in citrus peel and the release of major nutrients compared to sun-drying.Citrus peel processed by silage-sun-drying is safe for use as a feed ad-ditive in terms of the two critical hygiene indexes including pesticide residues and mycotoxins.