叶面喷施硅素对玫瑰香果实风味物质的影响

【目的】研究叶面喷施不同剂量硅素对玫瑰香果实风味物质及常规品质指标的定向调控效果，为玫瑰香葡萄生产中合理叶面喷布硅肥、品质定向调控提供科学依据。【方法】采用气相离子迁移谱技术(GC-IMS),检测分析玫瑰香果实风味物质等指标。【结果】在叶面喷施硅素处理的玫瑰香果实中检测出挥发性有机物47种，其中定性了32种，主要包括酯类、醛类、醇类和酮类。与CK相比，硅素浓度为200X时，乙酸丁酯的峰体积增大56.28%;硅素浓度400X时，苯甲酸甲酯的峰体积增大176.45%;600X时，乙酸丁酯的峰体积增大42.52%。对比发现，2-戊基呋喃、正己醇(二聚体)、正己醇、3-甲基-3-丁烯-1-醇、乙酸乙酯、丙酸乙酯(二聚体)、3-甲基丁醛等物质随叶喷硅素浓度升高，体积逐渐减小甚至消失。【结论】600X与CK相似，200X与400X相似。400X时，玫瑰香葡萄糖含量最高，为17.04%;总酸含量最少，为0.35%。

Studies on Volatile Organic Compounds of Muscat Hamburg Berry Treated by Foliar Spraying Silicon during the Growing Period

【Objective】 The technique of gas chromatography-ion mobility spectroscopy (GC-IMS) was used to test volatile organic compounds(VOCs) of Muscat Hamburg berry,the finding provided a scientific basis for rational application of silicon fertilization and the targeted regulation of quality Muscat Hamburg berry. 【Methods】 To explore the directional control effect of different dosage of silicone on rose fragrant fruit flavor material and conventional quality index. 【Results】 47 kinds of volatile organic compounds were detected in Muscat Hamburg berry, among which, 32 kinds were qualitatively, including 4 kinds of esters, aldehydes, alcohols and ketones. Compared with CK, when the silicon concentration was 200 times, the peak volume of butyl acetate increased by 56.28%; when 400 times, the peak volume of Methyl benzoate increased by 176.45%, and the peak volume of butyl acetate increased by 42.52% at 600 times. 2-pentylfuran, n-hexanol (dimer), n-hexanol, 3-methyl-3-buten-1-ol, ethyl acetate, ethyl propionate (dimer), 3-methylbutyl the peakvolume of aldehydes and other substances gradually decreased or even disappeared with the rising level of the silica concentration. 【Conclusion】 Its volatile organic compounds(VOCs) were similar to CK when the silicon concentration was 600 times, and the similarity was found between 400times and 200times. At 400 times Muscat Hamburg incense glucose content was the highest, which was17.04%, the total acid content was the least, 0.35%.