基于代謝組揭示雪兔和妙香7號草莓果實香氣物質(zhì)的差異

打開文本圖片集

Abstract：To clarify the diferences in aroma compounds between white strawberry Snow Rabbit and red strawberry Miaoxiang No.7，thebasic fruit qualityandaroma compoundsofthe two varietiesat the maturitystage were determined in this study.Basicqualitiesincluding singlefruit weight，anthocyanincontent，solublesolidscontent，andtotal phenolicontent were measured. Gas chromatography-mass spectrometry（GC-MS）was employed to detect volatilecompounds in the fruitsof thetwostrawberryvarieties.TheresultsshowedthatthefruitshapeindexofMiaoxiangNo.7was1.41，thefruitwas

longconicalinshape，whilethefruitshapeindexofSnow Rabbit was1.15，and the fruitwasshort conical in shape. The total phenolic content and anthocyanin content of Miaoxiang No.7 were 4.10mg/g and 1.21mg/g ，respectively，both were significantly higher than those of Snow Rabbit.A total of 471 metabolitesin15 categorieswere detected in the two strawberry cultivars，of which117 were upregulated，24weredown-regulated，and 96weredifferentiallyexpressed metabolites，accounting for 20.38% ofthe

totalmetabolites.Theeightdiferentialmetaboliteswithhighquantitieswerealcohols，aldehydes，acids，terpenoids，hydro carbons，ketones，heterocycliccompounds，and esters.These compounds were mainlyenriched inthebiosynthetic pathway of terpenoids.Themainvolatilecompoundsin SnowRabbitstrawberry fruitwereesters，whilethosein MiaoxiangNo.7fruit were terpenoids.There were 2O characteristicaroma compounds in Snow Rabbit strawberry，with a herbaceous aroma type， and there were 22 characteristic aroma compounds in Miaoxiang No.7 strawberry，with a fruity aroma type.

Keywords：strawberry；fruit；differential metabolites；aroma substances；quality

草莓（Fragaria × ananassa Duch.）屬于薔薇科（Rosaceae）草莓屬（Fragaria）[1]，是多年生草本漿果類果樹，其果實通常呈現(xiàn)出鮮艷的紅色，然而，除了常見的紅色果實之外，也有一部分草莓的果實為白色。（剩余12387字）