scholarly journals Extraction by solvent using microwave and ultrasound-assisted techniques followed by HPLC analysis of Harpagoside from Harpagophytum procumbens and comparison with conventional solvent extraction methods

2016 ◽  
Vol 19 (6) ◽  
pp. 692-698 ◽  
Author(s):  
Béatrice Baghdikian ◽  
Aurore Filly ◽  
Anne-Sylvie Fabiano-Tixier ◽  
Emmanuel Petitcolas ◽  
Fathi Mabrouki ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Hplc Analysis ◽  
Extraction Methods ◽  
Harpagophytum Procumbens ◽  
Conventional Solvent Extraction ◽  
Ultrasound Assisted

Comparison of Conventional and Ultrasound-Assisted Extraction Techniques for Extraction of Phenolic Compounds from Coconut Husk

2019 ◽  
Vol 891 ◽  
pp. 83-89
Author(s):  
Attapon Nitiwattananon ◽  
Saipin Thanachasai
Keyword(s):  
Solvent Extraction ◽  
Phenolic Compounds ◽  
Extraction Methods ◽  
Extraction Yield ◽  
Agitation Speed ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Conventional Solvent Extraction ◽  
Ultrasound Assisted ◽  
Conventional Extraction

In this study, ultrasound-assisted extraction (UAE) was compared with conventional extraction methods, including conventional solvent extraction without agitation (CSE), conventional solvent extraction with agitation at 50 rpm (CSE50) and 150 rpm (CSE150), for the extraction of phenolic compounds from coconut (Cocos nucifera L.) husk. The extraction yield, total phenolic content (TPC) and total flavonoid content (TFC) were examined. The antioxidant capacity of C. nucifera extracts was determined by using 2,2’-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) and 2,2’-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assays. Experimental results showed that UAE gave the highest extraction yield, TPC, TFC and antioxidant capacities (ABTS and DPPH), followed by CSE150, CSE50 and CSE, respectively. UAE was found to be more effective than conventional extraction methods. Conventional solvent extraction with higher agitation speed exhibited higher extraction efficiency than those with lower agitation speed and without agitation.

Accelerated, Microwave-Assisted, and Conventional Solvent Extraction Methods Affect Anthocyanin Composition from Colored Grains

2014 ◽  
Vol 79 (2) ◽  
pp. C138-C146 ◽  
Author(s):  
El-Sayed M. Abdel-Aal ◽  
Humayoun Akhtar ◽  
Iwona Rabalski ◽  
Michael Bryan
Keyword(s):  
Solvent Extraction ◽  
Extraction Methods ◽  
Microwave Assisted ◽  
Conventional Solvent Extraction ◽  
Anthocyanin Composition

scholarly journals Extraction of Carotenoids from Tomato Pomace via Water-Induced Hydrocolloidal Complexation

Biomolecules ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1019 ◽  
Author(s):  
Jayesree Nagarajan ◽  
Hang Pui Kay ◽  
Nagendra Prasad Krishnamurthy ◽  
Nagasundara Ramanan Ramakrishnan ◽  
Turki M. S. Aldawoud ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Antioxidant Capacity ◽  
Extraction Methods ◽  
Extraction Yield ◽  
Raw Material ◽  
Aqueous Environment ◽  
Tomato Pomace ◽  
Green Approach ◽  
Solvent Extraction Method ◽  
Conventional Solvent Extraction

Agro-industrial waste is a largely untapped natural resource of bioactive compounds including carotenoids and pectin. However, conventional solvent extraction involves the excessive use of organic solvents, costly equipment, and tedious operation. These limitations of conventional extraction methods could be prospectively overcome by the carotenoid–pectin hydrocolloidal complexation. The complexation of lycopene and pectin was efficiently promoted in an aqueous environment, resulting in the colloidal complexes that can be subsequently recovered by sedimentation or centrifugation. In this study, the potential of carotenoid–pectin complexation on tomato pomace containing carotenoids and pectin was evaluated. Tomato pomace is a rich source of lycopene, β-carotene as well as pectin, making it suitable as the raw material for the carotenoid extraction. The extraction of carotenoid and pectin from tomato pomace was optimized using response surface methodology. The maximum recovery was 9.43 mg carotenoid fractions/100 g tomato pomace, while the purity of carotenoid-rich fractions was 92%. The antioxidant capacity of carotenoids extracted from the complexation method was found to be higher than that from the solvent extraction method. Moreover, extraction yield and antioxidant capacity of carotenoid obtained from the carotenoid–pectin complexation were comparable to that from solvent extraction. The carotenoid–pectin complexation is a promising green approach to valorize agro by-products for the extraction of valuable carotenoids.

No-Solvent Oil-in-Water Analysis - A Robust Alternative to Conventional Solvent Extraction Methods

2011 ◽  
Author(s):  
Dale F. Brost ◽  
Amy Foster ◽  
Michael Holmes
Keyword(s):  
Solvent Extraction ◽  
Water Analysis ◽  
Extraction Methods ◽  
Oil In Water ◽  
Conventional Solvent Extraction

scholarly journals Identification and extraction method of quercetin from flesh and skin of shallot (Allium ascalonicum) cultivated in Soc Trang province, Vietnam

Food Research ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 358-365
Author(s):  
N.M. Thuy ◽  
N.T.M. Thuy ◽  
N.P. Cuong ◽  
L.T.N. Huyen ◽  
N.P. Phuong ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Extraction Method ◽  
Ethanol Concentration ◽  
Extraction Time ◽  
Ultrasound Assisted Extraction ◽  
Skin Sample ◽  
Quercetin Derivatives ◽  
Assisted Extraction ◽  
Conventional Solvent Extraction ◽  
Ultrasound Assisted

Quercetin is a bioactive compound that has many beneficial effects on human health. Due to a lack of information about quercetin and quercetin derivatives in the Vietnam shallot, this work aimed to identify the quercetin family in shallot skin and flesh by liquid chromatography-mass spectrometry. Effect of extraction method (conventional solvent extraction and ultrasound-assisted extraction), including ethanol concentration (40–80%) and extraction time (15 to 60 mins) on the yield of quercetin were also investigated in this study. Quercetin, quercetin-glucoside and methylated-quercetin-hexose were commonly found in the extract of shallot flesh and skin. A very small amount of quercetin aglycone (0.7%) was found in flesh extract, while it was the most abundant in the skin sample (46.3%). The high content of quercetin-mono-glycoside was obtained in shallot extract (43.8% and 35.3% in the shallot flesh and skin, respectively). The flesh extract also contained high level of quercetin-di-glucoside (38.9%). About 14-16% of methylatedquercetin (-glucoside) were found in shallot bulb (both skin and flesh). It was found that ethanol concentration and extraction time directly affected on the quercetin extraction yield. The highest quercetin content was obtained in the sample which was extracted in 60% ethanol in combination with ultrasound-assisted extraction for 15 to 45 mins. The ultrasound-assisted extraction method improved quercetin yield by 13.38-15.64% and 49.46-56.88% for shallot skin and flesh compared to conventional solvent extraction. This study proved that ultrasound-assisted extraction could successfully be used for extraction of quercetin from shallot (both skin and flesh).

Comparison of the compounds and characteristics of pepper seed oil by pressure-assisted, ultrasound-assisted and conventional solvent extraction

2019 ◽  
Vol 54 ◽  
pp. 78-86 ◽  
Author(s):  
Yan Ma ◽  
Xiaomeng Wu ◽  
Liang Zhao ◽  
Yongtao Wang ◽  
Xiaojun Liao
Keyword(s):  
Solvent Extraction ◽  
Seed Oil ◽  
Conventional Solvent Extraction ◽  
Ultrasound Assisted ◽  
Pepper Seed
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