Study on inhibitory effect of green banana fruit extract on the anthracnose from three tropical fruits.
He QuanGuang, Liao Fen, Li ZhiChun, Cui SuFen, Zhang Jin, Li ChangBao
Author Affiliation: Institute of Agro-food Science & Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China.
Storage and Process 13 : 6-10
Abstract : Treating the green banana fruits with cold water (6°C, 4 h) and hot water (53°C, 5 min) respectively, and then using different extraction material state (dry, fresh), different extraction methods (80% ethanol extraction method and cold, hot water extraction method), we studied the inhibitory effects of crude extracts from banana peel and pulp on the three tropical fruit anthracnose of banana, mango and papaya, and selected the minimum inhibitory concentration (MIC). The results showed that, the 80% ethanol extracts of green banana peel and pulp didn't show any inhibitory effect on three kinds of fruit anthracnose pathogen, the inhibitory effect of the water extract from fresh sample was better than that of the water extract from dry sample, the water extract from pericarp had no obvious inhibiting effect on banana anthracnose, the heat water treatment could enhance the inhibition effects of cold or hot water extract from pericarp on mango and papaya anthracnose. The water extract from pulp only showed little inhibiting effect on three kinds of fruit anthracnose; however, the heat water treatment could enhance the inhibition effects of cold or hot water extract from pulp on the three kinds of fruit anthracnose, and the best suppression effect was found in banana anthracnose. After cold treatment to banana fruit, only hot water extract showed inhibiting effect on these anthracnose germination. The results of MIC test showed that, the MIC of hot water extract from green banana fresh sample on three kinds of anthracnose was 10%. These results were great help to make further understanding of the systematic resistance to disease for banana fruit and had the theoretical and practical significance to extend the theory of biological control of postharvest fruits and vegetables.