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Effect of solvent types and extraction times on phenolic and flavonoid contents and antioxidant activity in leaf extracts of amomum chinense c.
Butsat, S1, Siriamornpun, S2.
The present study determined the phenolic and flavonoid contents in Amomum chinense C. leaf
extracts obtained using four extracting solvents(distilled water, 80% methanol, 80% ethanol and
80% acetone)with various extraction times (6h, 12h and 24h) at 37o
C. All extraction conditions
significantly (p <0.05) affected the phenolic contents and antioxidant activity of the leaf extracts.
The optimal conditions used for extracting the phenolic compounds from A. chinense leaves
were 80% methanol for 12h, which provided a higher amount of phenolics and antioxidant
activity compared to the other conditions tested. There was a strong correlation between
total phenolic content and antioxidant activities based on the three assays with correlation
coefficients of 0.805, 0.873 and 0.975 for DPPH, ABTS and FRAP assays, respectively. HPLC
analyses of all extracts revealed that the major phenolic acids identified in the tested extracts
were chlorogenic acid, cinnamic acid, ferulic acid and caffeic acid, whereas catechin, rutin and
quercetin were the major of flavonoids.
Affiliation:
- Mahasarakham University, Thailand
- Mahasarakham University, Thailand
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Indexation |
Indexed by |
MyJurnal (2017) |
H-Index
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8 |
Immediacy Index
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0.002 |
Rank |
24/42,Q3(Sciences ) 24/42,Q3(Sciences ) 8/20,Q2(Medical & Health Sciences )
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Indexed by |
Scopus (SCImago Journal Rankings 2016) |
Impact Factor
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- |
Rank |
Q3 (Food Science) |
Additional Information |
0.335 (SJR) |
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