The experiment was conducted to evaluate the effect of ethephon (2-chloroethyl phosphonic acid) on ripening and postharvest quality of tomato (Solanum lycopersicum). Four concentrations of ethephon viz. 250, 500, 750 and 1000 ppm were applied in the experiment for ripening of tomato under ambient conditions (22±2oC & 80±5% RH) with a control (0 ppm ethephon) in two consecutive years 2012 - 2013. The tomato fruits of ‘Udayan’ variety at breaker stage were harvested from the farmers’. The treated fruits were assessed for ripening percentage and biochemical properties such as total soluble solids (TSS) (%), titratable acidity (%), ascorbic acid content (mg/100g) and total carotenoids (mg/100g). The observations were recorded at 3, 6, 9 and 12 days after storage. The maximum TSS and total carotenoids were found in tomato treated with ethephon concentration @750 - 1000 ppm after 6 days of storage. From the experiment, it was found that ethephon can be applied @750 – 1000 ppm in breaker stage of tomato for uniform ripening within 6 days of storage at ambient temperature. The applied ethephon was estimated as 0.18 - 0.88 ppm at edible stage (6 days of storage), which was lower than the maximum residue limit (MRL) (2 ppm of ethephon) and safe for human consumption. Bangladesh J. Agril. Res. 45(3): 303-314, September 2020
The baseline survey was conducted with a view to generate information on existing status of fried potato chips from processing to marketing in selected locations of Bangladesh. The baseline information was collected from seven selected districts namely Dhaka, Gazipur, Tangail, Mymensingh, Bogura, Munshigonj and Jashore. Fifteen hawkers and five producers were randomly selected to collect the information by the pre-tested questionnaire from each location both from producer to consumer. Most of the hawkers of Bogura was above 40 years old (80%) followed by Dhaka who were 25-39 years old (60%). In Bangladesh, eighty percent people were above 40 years old engaged in processing fried potato chips. All aged people in Bogura preferred fried potato chips (100%) whereas maximum child in Jashore (80%) liked fried potato chips. Bogura and Munshigonj people were unknown about healthiness knowledge of fried chips consumption. Bogura, Jashore and Munshigonj processors/producers were hawkers and they prepared the product and distributed the products to the market or direct involved in sale. Fried chips processing people in the survey area used deep frying technique (100%). Soya bean oil used for deep oil frying of potato chips by 80% small processors. Most of the respondents changed their frying oil during frying when frying oil turned into cloudy. Bangladesh J. Agril. Res. 45(2): 137-144, June 2020
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