1.2.5) changes the yellow (b *)
.The effect of soaking solution of longan fruit in various effecting changes the yellow (b *) of skin color, longan peel (the table. 6) found that all treatments were not different. The average 19.38 yellow start - 20.80 then all treatments decreased from the beginning when the shelf-life increased, until in the 24 of preservation. Process of sodium metabisulphite bisulphite concentration 10% adjust pH4 with sound intensity level.The concentration 10% adjust pH4 with citric acid, sodium metabisulphite process bisulphite concentration 10% adjust pH2 with sound intensity level and process sodium metabisulphite bisulfite. The concentration 10% adjust pH2 with citric acid.As 19.28 and 19.89 20.99 19.91 respectively, while the control treatment of citric acid concentration 5% (pH4) and karma how sound intensity level. The concentration 1% (pH4) with the yellowing of the skin peel was 13.37 and minimal 13.32 13.24
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