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STUDY ON THE VARIATIONS OF THE FATTY ACIDS AND AMINO ACIDS OF GREEN PEEL AVOCADO IN SON LA PROVINCE AT DIFFERENT HARVESTING MATURITY

Green peel avocado is a fruit with high nutritional value, rich in lipids, proteins, sugars, vitamins, and minerals. The aim of this study was to determine the change in fatty acid and amino acid content of green peel avocados harvested at 200, 210 and 220 days in order to select the appropriate harvest time, serving for efficient preservation and processing. The results of the study showed that 9 fatty acids were identified at the time of harvesting at 200 days, 10 fatty acids at the time of harvesting at 210, and 220 days of green peel avocado. Compared with two harvest times as 210, and 220 days since fruiting, the fatty acid content of green peel avocado did not differ so much. By using the HPLC method, 13 amino acids, 14 amino acids, and 15 amino acids were identified at 200, 210, and 220 days after fruiting, respectively. Glycine, alanine, lysine, and phenylalanine were intended to increase in the developmental stages of green peel avocado, whereas the other amino acids did not change much. Therefore, based on the change in fatty acid and amino acid content, green peel avocado farmers in Son La province should choose the time of harvest from 210 to 220 days from fruiting to be suitable for preservation and processing. If harvesting green peels avocados at more than 220 days after fruiting, it will make the dried fruit and spongy, and affect flowering, fruit set, and yield in the next fruit crop.