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| Content Provider | Springer Nature Link |
|---|---|
| Author | Teh, Sue Siang Niven, Brian E. Bekhit, Alaa El Din A. Carne, Alan Birch, Edward John |
| Copyright Year | 2014 |
| Abstract | The use of microwave and pulsed electric field (PEF) processing to optimize polyphenol extraction from defatted hemp seed cake in mixed solvent of methanol, acetone and water (MAW, 7:7:6 v/v/v) was investigated using the Box-Behnken response surface method. A variables combination for microwave processing of time, microwave power and liquid to solid (L:S) ratio and for PEF (ethanol concentration, time, frequency and voltage) were used in the investigation. Following microwave or PEF treatments, the polyphenols were extracted from the samples under ultrasound with fixed variables (200 W of ultrasonic power, water bath of 70 °C and 20 min of extraction time). The measured responses were total phenolics (TP), total flavonoids (TF), DPPH˙ scavenging activity and ferric reducing/antioxidant power (FRAP). The optimum variables combination for microwave processing (5 min treatment time, L:S ratio of 6, 700 W power and volume 30 mL) and PEF-assisted extraction (voltage (30 V), frequency (30 Hz), ethanol concentration (10 %) and time (10 s)) resulted in maximum yields in all measured responses. The results suggest that microwave processing and PEF can be integrated in processing defatted hemp seed cake to enhance polyphenol extraction and maximize the yield. |
| Starting Page | 3064 |
| Ending Page | 3076 |
| Page Count | 13 |
| File Format | |
| ISSN | 19355130 |
| Journal | Food and Bioprocess Technology |
| Volume Number | 7 |
| Issue Number | 11 |
| e-ISSN | 19355149 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2014-04-22 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Hemp seed cake Microwave Pulsed electric field Total phenolics Total flavonoids Antioxidant capacity Food Science Chemistry/Food Science Agriculture Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Industrial and Manufacturing Engineering Safety, Risk, Reliability and Quality Food Science Process Chemistry and Technology |
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