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Influence of Maturity and Drying Temperature on Antioxidant Activity and Chemical Compositions in Ginger |
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| รหัสดีโอไอ | |
| Creator | Niramon Utama-ang |
| Title | Influence of Maturity and Drying Temperature on Antioxidant Activity and Chemical Compositions in Ginger |
| Contributor | Sirinapa Sida, Rajnibhas Sukeaw Samakradhamrongthai |
| Publisher | King Mongkut's Institute of Technology Ladkrabang |
| Publication Year | 2562 |
| Journal Title | Current Applied Science and Technology |
| Journal Vol. | 19 |
| Journal No. | 1 |
| Page no. | 28-42 |
| Keyword | Zingiber officinale, ginger, maturity, antioxidant, volatile compounds, drying |
| URL Website | https://www.tci-thaijo.org/index.php/cast |
| Website title | https://www.tci-thaijo.org/index.php |
| ISSN | 2586-9396 |
| Abstract | The objective was to study the effect of maturity at harvest and drying temperature on antioxidant activity and physiochemical properties of ginger (Zingiber officinale). The effects of two different maturities of harvest, i.e. 6 months and 9 months were examined. It was found that the contents of carbohydrate and fiber values increased in the 9 month sample. The 9-month sample was higher in total phenolic contents (5.08 ตmol Tannic acid/g), DPPH (85.33% inhibition), ABTS (42.23 ตmol Trolox/g) and FRAP (13.78 ตmol Trolox/g) than the younger 6-month sample. In essential oil constituents, the 9-month sample contained higher amounts of geranial (28.31%), neral (15.29%), ?-phellandrene (13.32%), campene (7.77%) and ?zingiberene (6.17%) in comparison to the 6month samples. The 9-month sample contained the highest level of 6-gingerol (24.36 mg/g). Therefore, the ginger harvested at 9 months was selected for the study of different drying temperatures. Drying times and temperature to achieve moisture content below 10% at 308 min, 60ฐC were proven to be the best condition as it achieved the highest total phenolic content (12.21 ตmol Tannic acid /g), DPPH (91.35%), ABTS (223.50 ตmol Trolox/g) and FRAP (42.39 ตmol Trolox/g). Ginger contains 45 volatile compounds and the highest main compounds being ?zingiberene (18.28%), ?-farnesene (10.73%) and geranial (12.42%) when drying temperature was at 60ฐC. The content of 6-gingerol was also found to be the highest in the sample dried at 60ฐC (12.57 mg/g). |
