Effects of Fruit Bagging Treatment with Different Types of Bags on the Contents of Phenolics and Monoterpenes in Muscat-Flavored Table Grapes

The effects of fruit bagging treatments with seven different types bags on the physicochemical characteristics three table grape cultivars: RuiduZaohong (RDZH), RuiduHongyu (RDHY), and RuiduHongmei (RDHM) were investigated. Headspace-solid-phase micro-extraction combined gas chromatography mass spectrometry (HS-SPME-GC-MS) was used to determine compositions monoterpenes in fruit. results showed that total soluble solids RDZH RDHY fruits treated transparent, mesh, yellow, white, blue significantly higher than control. sugar–acid ratio optimized under transparent bag yellow treatments, both increased sugar-acid RDHM. Additionally, mesh bag, white improved contents phenolics a certain extent. most abundant volatiles linalool, geraniol, β-myrcene, β-cis-ocimene, β-trans-ocimene, which linalool main aroma component. least squares discriminant analysis 4-terpineol, terpinolen could be distinguish contribution for RDZH. Trans-isogeraniol, α-terpineol, RDHY. In conclusion, promoted accumulation while pink inhibitory effects.