Extraction and characterization of 6-shogaol and 6-gingerol from Zingiber officinale var. Bentong

Sharizan A., . and Sahilah A.M., . (2021) Extraction and characterization of 6-shogaol and 6-gingerol from Zingiber officinale var. Bentong. Food Research (Malaysia), 5. pp. 236-243. ISSN 2550-2166

Zingiber officinale Roscoe var. Bentong or locally known as Bentong ginger is exclusively planted and harvested in the district of Bentong, Pahang, Malaysia. The demand for this ginger species has dramatically increased due to its high food and medicinal values, owing to the presence of 6-shogaol and 6-gingerol as active compounds. This study aimed to measure the concentrations of those active compounds with respect to their one-year plantation duration (January - December 2018). The proximate analysis, heavy metals and antioxidant activity were simultaneously determined during the plant growth. 6-gingerol was present in both fresh and dried samples whilst 6-shogaol could only be found in dried samples. Fresh ginger recorded the highest 6-gingerol content (2.09 mg/g) in the seventh month of harvesting time. On the other hand, in the sixth month of harvesting time, dried ginger had the highest concentration of 6-gingerol (0.66 mg/g) and 6-shogaol (1.85 mg/g). Notably, the accumulation of heavy metals such as As, Pb, Cd and Hg in Bentong ginger was relatively low and within the permissible limit. Meanwhile, the total polyphenol and phenolic content of Bentong ginger extract solution were observed to decrease as the ginger was maturing. In conclusion, Z. officinale Roscoe var. Bentong yielded different amounts of active compounds with respect to its harvesting time. Nevertheless, it generally exhibits good values in terms of chemical compositions that can be potentially used as nutraceutical food.

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Abstract

Zingiber officinale Roscoe var. Bentong or locally known as Bentong ginger is exclusively planted and harvested in the district of Bentong, Pahang, Malaysia. The demand for this ginger species has dramatically increased due to its high food and medicinal values, owing to the presence of 6-shogaol and 6-gingerol as active compounds. This study aimed to measure the concentrations of those active compounds with respect to their one-year plantation duration (January - December 2018). The proximate analysis, heavy metals and antioxidant activity were simultaneously determined during the plant growth. 6-gingerol was present in both fresh and dried samples whilst 6-shogaol could only be found in dried samples. Fresh ginger recorded the highest 6-gingerol content (2.09 mg/g) in the seventh month of harvesting time. On the other hand, in the sixth month of harvesting time, dried ginger had the highest concentration of 6-gingerol (0.66 mg/g) and 6-shogaol (1.85 mg/g). Notably, the accumulation of heavy metals such as As, Pb, Cd and Hg in Bentong ginger was relatively low and within the permissible limit. Meanwhile, the total polyphenol and phenolic content of Bentong ginger extract solution were observed to decrease as the ginger was maturing. In conclusion, Z. officinale Roscoe var. Bentong yielded different amounts of active compounds with respect to its harvesting time. Nevertheless, it generally exhibits good values in terms of chemical compositions that can be potentially used as nutraceutical food.

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Item Type:	Article
AGROVOC Term:	Zingiber officinale
AGROVOC Term:	medicinal plants
AGROVOC Term:	functional foods
AGROVOC Term:	extraction
AGROVOC Term:	proximate analysis
AGROVOC Term:	heavy metals
AGROVOC Term:	phenolic compounds
AGROVOC Term:	chemical composition
Geographical Term:	Malaysia
Depositing User:	Mr. Khoirul Asrimi Md Nor
Date Deposited:	02 Jul 2025 01:52
Last Modified:	02 Jul 2025 01:52
URI:	http://webagris.upm.edu.my/id/eprint/2926

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