Changes Of Volatile Compounds In Banana And Pink Banana During Fruit Ripening And The Influence Of Different Fertilizers On It

Aroma is increasingly an important indicator of fruit quality. In this thesis,’Brazil’banana and ’Guangfen No.1’ fenjiao were used as material to invetigate changes in volatilecompounds and influneces of fertilizers during fruit ripening, and roles of alcoholdehydrogenase and acyl dehydrogenase on the formation of aroma compounds were alsoanalysed. The main findings were as follows:1. Using ’Brazil’ banana as materials, method for volatile compounds extrating bysolid-phase micro extraction were optimized. Results indicated that,50/30m DVB/CAR/PDMS was effective in extracting banana fruit aroma; the optimum extractionconditions were,4g sample, extraction temperature of35℃, extraction time of25min,3mL saturated NaCl solution, desorption time of2min.2. Endogenous ethylene releasements were monitored during fruit ripening of ‘Brazil’banana and ‘Guangfen No.1’ fenjiao. Results indicated that, endogenous ethylenereleasements showed similiar patterns between the ‘Brazil’ banana and ‘Guangfen No.1’fenjiao, and the climatic reached after11d and5d, with a rate of74.0565nL·g-1·h-1and42.7989nL·g-1·h-1, respectively.3. Using the optimized extration method, components and contents of volatilecompounds in fruits of ’Brazil’ banana and ‘Guangfen No.1’ fenjiao during ripening wereinvestigated. Totally,45and27volatile compounds were detected in fruit of banan andfenjiao, respectively. Among them, aldehydes and esters shared large proportions.Characteristic aroma components for banana and fenjiao were7and6, respectively, someesters and aldehydes were shared by both. During fruit ripening, ordor values of estersincreased more than that of aldehydes, with varying extents for different coponents.4. Effects of fish meal+compound fertilizer, peanut cake+compound fertilizer andcompund fertilizer on the components and contents of volatile compounds during fruitripening of banana and fenjiao were analysed. Results indicated that, fish meal+compound fertilizer increased total volatile compounds contents and components ofvolatile compounds as well as total characteristic aroma compounds and components, andpomoted accumulation of most volatile compounds, and more obvious in fish meal+compound fertilizer. During fruit ripening of both banana and fenjiao, activities of alcohol dehydrogenase decreased consistantly, while activities of acyl dehydrogenase showed apeak. Activities of both enzymes showed similiar changing patterns between banana andfenjiao, but levels of activities differented.