An application of new microwave absorption tube in non-polar solvent microwave-assisted extraction of organophosphorus pesticides from fresh vegetable samples

2012 ◽  
Vol 1229 ◽  
pp. 6-12 ◽  
Author(s):  
Xin Zhao ◽  
Xu Xu ◽  
Rui Su ◽  
Hanqi Zhang ◽  
Ziming Wang
Keyword(s):  
Microwave Absorption ◽  
Polar Solvent ◽  
Organophosphorus Pesticides ◽  
Microwave Assisted Extraction ◽  
Absorption Tube ◽  
Microwave Assisted ◽  
Vegetable Samples ◽  
Fresh Vegetable ◽  
Assisted Extraction

Non-polar Solvent Microwave-Assisted Extraction of Volatile Constituents from DriedZingiber Officinale Rosc.

2007 ◽  
Vol 25 (3) ◽  
pp. 346-350 ◽  
Author(s):  
Yong Yu ◽  
Zi-Ming Wang ◽  
Yu-Tang Wang ◽  
Tie-Chun Li ◽  
Jian-Hua Cheng ◽  
...  
Keyword(s):  
Polar Solvent ◽  
Microwave Assisted Extraction ◽  
Volatile Constituents ◽  
Microwave Assisted ◽  
Assisted Extraction

scholarly journals EKSTRAKSI TANIN DARI KULIT KAYU AKASIA DENGAN MENGGUNAKAN MICROWAVE: PENGARUH DAYA MICROWAVE, WAKTU EKSTRAKSI DAN JENIS PELARUT

2017 ◽  
Vol 6 (3) ◽  
pp. 52-57
Author(s):  
Iriany ◽  
Florentina Pandiangan ◽  
Christina Eka P
Keyword(s):  
Atomic Absorption ◽  
Adsorption Capacity ◽  
Microwave Power ◽  
Polar Solvent ◽  
Extraction Time ◽  
Solvent Ratio ◽  
Microwave Assisted Extraction ◽  
Power Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction

Tannin is one of complex polyphenol compound which soluble in polar solvent. Tannin could be extracted from acacia bark. This study aims to examine microwave-assisted extraction of tannins under influence of microwave power, extraction time, and solvent and its application to adsorb Cd and Cu. Tannin was extracted from acacia bark with feed-to-solvent ratio (1:20 g/ml). Power of microwave was adjusted 100 W, 180 W, 300 W, 450 W, and 600 W for 1 minute, 3 minutes and 5 minutes respectively using aquadest and ethanol as the solvent. The extracts were analyzed using UV-Vis spectrophotometer. Furthermore, the extract with the highest yield of tannins are used as the adsorbent. The concentration of Cd and cu were analyzed using Atomic Absorption Spectrophotometer. The result showed the highest yield of tannin 26.606 mg/g at 100 W and 3 minutes extraction time using ethanol as the solvent. The result showed that the adsorption capacity of adsorbent from tannin was 3.81 mg/g and 2.26 mg/g for Cd and Cu respectively.

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