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Dehydration of red bell-pepper (Capsicum annuum L.): Change in drying behavior, colour and antioxidant content
Scopus
Toplam 165 atıf DOI
The sun, oven (50 and 70 °C) and microwave oven (210 and 700 W) drying behaviors of red bell-pepper slices were investigated. Effects of these drying methods in terms of colour indices and antioxidant activity of pepper slices were also studied. "Midilli and Küük" model exhibited high coefficient of determination (R2) values for all the drying methods used in the assay, ranging between 0.994-0.999, while "Page" and "Modified Page" models fit better for oven drying at 70 °C. The calculated effective diffusivity (Deff) values (m2/s) of pepper slices for the drying processes ranged between 0.31 and 87.39 × 10-9. Sun dried and followed by microwave oven (700 W) dried samples revealed the highest L*, a* and b * colour values than the other dried samples. Microwave oven dried (210 W) and oven dried (50 °C) samples exhibited the lowest TEAC and DPPH radical scavenging activities among the dried samples. © 2010 The Institution of Chemical Engineers.
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The role of environmental air and microwave drying on colour values, bioactive properties and phenolic compounds of jalapeno pepper
Scopus
Havuzumuzda Open Access 8 atıf almış
In this study, the effect of dehydration of some physico-chemical characteristics, total phenol, flavonoids, antioxidant capacity and phenolic compounds of green and red jalapeno pepper fruits was investigated. The total carotenoid contents of red and green jalapeno pepper samples were reported to be between 14.15 (fresh) and 129.00 μg/g (540 and 720 W) to 2.8 (fresh) and 27.25 μg/g (720 W), respectively. Total phenolic results of red and green jalapeno pepper samples were recorded between 205.83 (fresh) and 343.93 mg GAE/100 g (540 W) to 81.69 (fresh) and 309.88 mg gallic acid equivalent (GAE)/100 g (air drying), respectively. The highest decrease in L* results (brightness) of both red (32.33) and green (36.45) peppers was determined with air drying. Gallic acid, catechin and kaempferol were the predominant phenolic compounds of jalapeno peppers. Gallic acid amounts of red and green jalapeno pepper samples changed between 3.23 (fresh) and 16.20 mg/100 g (air) to 2.41 (fresh) and 9.30 mg/100 g (air), respectively. Also, catechin amounts of both red and green dehydrated jalapeno pepper fruits were determined between 3.24 (fresh) and 106.33 mg/100 g (900 W) to 2.89 (fresh) and 90.05 mg/100 g (air), respectively. Both conventional and microwave drying has caused the reduction of redness for red pepper and greenness for green pepper. The phenolic components of red jalapeno peppers were partially higher than the green ones.
Atıf Yapan Makale Bilgileri
Kurumlar (3)
Jimei University
Xiamen, China
King Saud University
Riyadh, Saudi Arabia
Selçuk Üniversitesi
Selçuklu, Turkey