Abstract
Okra (Abelmoschus esculentus L.), like most fruits and vegetables, deteriorates quickly after harvesting due to its high moisture content and respiration rate. To preserve it and mitigate the post-harvest losses, a developed evacuated tube solar dryer (ETSD) with heat pipes was used to dry fresh okra. Thermal profiling of the ETSD was carried out to investigate the range of temperature gain inside the drying chamber. The effect of different blanching temperatures, viz. 70, 80, and 90°C, on drying characteristics and physical properties like color, water activity, and rehydration kinetics of okra were investigated. The energy efficiency of the collector ranged from 13.21% to 42.67%. Similarly, the convective mass transfer coefficient was calculated and ranged from 3.41 × 10−07 to 8.57 × 10−07 m/s. The okra blanched at 80°C, showing maximum greenness retention and lower water activity. The rehydration ratio was 6.05, 7.19, 7.73, and 7.41 for control, and okra blanched at 70, 80, and 90°C. The rehydration kinetics were analyzed using four distinct models: Peleg, Weibull, exponential, and first order. The Weibull model demonstrated the most accurate fit to the data. It is suggested that okra blanched at 80°C and dried under ETSD gives better retention of color and a higher mass transfer and rehydration rate.
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Claims 9
Claim · model-written summary
The solar dryer collector had energy efficiency of 13.21% to 42.67%.
Verbatim
e0“The energy efficiency of the collector ranged from 13.21% to 42.67%.”
Claim · model-written summary
The calculated convective mass transfer coefficient ranged from 3.41 × 10−07 to 8.57 × 10−07 m/s.
Not reportedTaxon
Verbatim
e0“the convective mass transfer coefficient was calculated and ranged from 3.41 × 10−07 to 8.57 × 10−07 m/s.”
Claim · model-written summary
Okra blanched at 80°C retained maximum greenness and had lower water activity.
- Taxon
- okra
.jpg?width=60)
Abelmoschus esculentuse0 - Treatment
- blanched at 80°Ce0
- Outcome
- greenness retention and lower water activitye0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The okra blanched at 80°C, showing maximum greenness retention and lower water activity.”
Claim · model-written summary
Control okra had a rehydration ratio of 6.05.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- controle0
- Outcome
- rehydration ratioe0
- Value
- 6.05e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rehydration ratio was 6.05, 7.19, 7.73, and 7.41 for control, and okra blanched at 70, 80, and 90°C.”
Claim · model-written summary
Okra blanched at 70°C had a rehydration ratio of 7.19.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- blanched at 70e0
- Outcome
- rehydration ratioe0
- Value
- 7.19e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rehydration ratio was 6.05, 7.19, 7.73, and 7.41 for control, and okra blanched at 70, 80, and 90°C.”
Claim · model-written summary
Okra blanched at 80°C had a rehydration ratio of 7.73.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- blanched at 70, 80e0
- Outcome
- rehydration ratioe0
- Value
- 7.73e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rehydration ratio was 6.05, 7.19, 7.73, and 7.41 for control, and okra blanched at 70, 80, and 90°C.”
Claim · model-written summary
Okra blanched at 90°C had a rehydration ratio of 7.41.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- 90°Ce0
- Outcome
- rehydration ratioe0
- Value
- 7.41e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rehydration ratio was 6.05, 7.19, 7.73, and 7.41 for control, and okra blanched at 70, 80, and 90°C.”
Claim · model-written summary
The Weibull model fit the rehydration data most accurately.
Verbatim
e0“The Weibull model demonstrated the most accurate fit to the data.”
Claim · model-written summary
The authors suggest 80°C blanching followed by solar drying for better color retention and higher mass transfer and rehydration rates.
- Taxon
- okraAbelmoschus esculentuse0
- Treatment
- blanched at 80°C and dried under ETSDe0
- Outcome
- better retention of color and a higher mass transfer and rehydration ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is suggested that okra blanched at 80°C and dried under ETSD gives better retention of color and a higher mass transfer and rehydration rate.”
The same questions in other papers
processing · physiology: pigments · Abelmoschus esculentus (okra)Positive and negative results
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