Abstract
The experiment was conducted to study the effect of cyanocobalamin (B12) treatments (0, 3, 6, and 9mM B12) on Vitis vinifera L. ‘Crimson seedless’ which conducted during two seasons 2014 and 2015. The study aims to regenerate berry color during growth and preserve it during shelf-life at room temperature for four days. The results showed that B12 treatments were significantly effective in reducing weight loss. Berry shatter, rachis browning index, while it preserved another quality parameter high such as berry firmness, separation force, total phenol content (TPC), total sugar content (TSC), total anthocyanin content (TAC), B-Carotene, ascorbic acid (AA) and color hue angle during shelf-life for four days. The previous results were significantly observed with B12 at 9mM compared to control and other B12 concentrations. However, total solid content (SSC%), titratable acidity (TA%), and SSC/TA ratio were significantly affected by B12 at 9mM up to end the shelf-life period. In contrast, the lowest values of total chlorophyll (Chlab) content during shelf-life compared with other B12 concentrations. Therefore, cyanocobalamin (B12) is an effective vitamin for improving or generating berry color at harvest time and maintaining cluster quality of ‘Crimson seedless’ grapes during shelf-life (marketing).
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