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Browsing Journal Articles by Subject "Ambient conditions"
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- ItemIdentification of Appropriate Maturation Stages and Postharvest Treatment for Tomato Fruits of the "Pearson" Variety for Local and Distant Markets(2022) Sayed Samiullah Hakimi; Ravinder Raina; Yashpal Singh SaharawatThis study was conducted under ambient conditions at the research farm of the Agriculture Faculty at Kabul University, Afghanistan. The objectives were to identify suitable harvesting maturity stages for tomato crop that will result in adequate shelf life of tomato fruits for local and distant markets. The results indicated that fruits of the turning color stage treated with 6 % CaCl2 solution had the best quality and highest shelf life (17.5 days) compared to other treatments. Based on the significant main effect, the 15.38 and 14.17 days’ highest shelf life was recorded for tomatoes of H1 (turning color stage) and D1 (dipped in 6 % CaCl2 solution), respectively. The TSS ( o Brix) and PLW (%) were increased till the end of storage life, but the tomato fruits’ firmness (g cm-2) decreased. Hence, the lowest values were noted as 4.79 and 4.74 (0 brix) TSS and 3.31 and 2.93 (%) PLW, but the highest firmness of 932.50 and 854.17 (g cm-2) were recorded for fruits of H1 (turning color stage) and D1 (dipped in 6 % CaCl2 solution), respectively. The turning color, pink color and light red color stage fruits of the Pearson variety are recommended to be harvested and considered for distant market, local market and immediate use, respectively. And the 6 % CaCl2 solution could increase shelf life and maintain tomato’s quality.
- ItemImpact of Evaporative cooling technology & Post-harvest treatments on shelf life and quality of tomato of two different harvesting stages (Solanum lycopersicum var. Pearson)(2021-08-20) Sayed Samiullah Hakimi; Ravinder Raina; Yashpal Singh SaharawatThe Zero Energy Cool Chamber (ZECC) is the needed evaporative cooling system introduced as one of the economical small scale on-farm storage in Afghanistan for enhancing the shelf life of tomato and other fresh crops. Tomato is one of the highest value crops, and due to excellent flavor, higher juice, and pulp content of tomato fruits of “Pearson” variety makes it further valuable. Hence, this study aims to understand the effect of ZECC and postharvest treatments on shelf life and quality of tomato’s fruits harvested at turning and light red colors’ stages. Fruits were treated with different concentrations of CaCl2 and mint leaf extract solutions and kept in both ZECC and ambient storages. The shelf life of tomato fruits extended up to 29 days under T4 (turning color fruits + 6% CaCl2 + ZECC). Under the same treatment, the highest firmness as 840.0 grcm-2 and the lowest PLW, Decay Losses and TSS were recorded as 1.80%, 0.0% and 4.400 brix, respectively; on the 20th day of the storage. The lowest shelf life under T11 (Light red color fruits + distilled water dip + Ambient condition) was about 8 days. As a result, the ZECC as an evaporative cooling system significantly enhanced the shelf life and maintained the quality of tomato fruits harvested at the turning color stage treated with 6% CaCl2.