Abstract
This study is aimed to increase the extraction yield and efficiency of the antioxidant phenolic compounds from Pinus morrisonicola. The optimum extraction conditions for the phenolic compounds from pine needles are determined by using response surface methodology with a central-composite design. Effects of ethanol concentration, extraction temperature and liquid–solid ratio on the extraction yield (total flavonoids content and total phenolic content) and antioxidant activity (2,2′-diphenyl-1-picryhydrazyl (DPPH) scavenging activity, ferric reducing antioxidant power (FRAP) and 2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) scavenging activity) are investigated. The optimum conditions to maximize the extraction yields and antioxidant activity of the pine needles extracts are: 36.1% v/v of ethanol, 70 ºC and 50 ml/g of liquid–solid ratio. The pine needles extracts are shown to be free of 311 tested pesticide residues or certain heavy metals and exhibit comparable quantities of total flavonoids contents, total phenolic contents and the antioxidant activities with commercial products.
| Original language | English |
|---|---|
| Pages (from-to) | 7-14 |
| Journal | Journal of the Taiwan Institute of Chemical Engineers |
| Volume | 70 |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- Antioxidant activity
- Catechin
- Compressional-puffing pretreatment
- Phenolic compounds extraction
- Pinus morrisonicola
- Response surface methodology