Model generation and process optimization of microwave-assisted aqueous extraction of anthocyanins from grape juice waste

2016 ◽  
Vol 40 (3) ◽  
pp. e12486 ◽  
Author(s):  
Venkatramanan Varadharajan ◽  
Sethupathi Shanmugam ◽  
Arulvel Ramaswamy
Keyword(s):  
Process Optimization ◽  
Grape Juice ◽  
Aqueous Extraction ◽  
Model Generation ◽  
Microwave Assisted

scholarly journals Effects of Process Parameters on the Color Quality of Anthocyanin-Based Colorants from Conventional and Microwave-Assisted Aqueous Extraction of Sweet Potato (Ipomoea batatas L.) Leaf Varieties

Proceedings ◽  
2020 ◽  
Vol 70 (1) ◽  
pp. 103
Author(s):  
Jin Mark D. G. Pagulayan ◽  
Aprille Suzette V. Mendoza ◽  
Fredelyn S. Gascon ◽  
Jan Carlo C. Aningat ◽  
Abigail S. Rustia ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Process Parameters ◽  
Ipomoea Batatas ◽  
Extraction Methods ◽  
Aqueous Extraction ◽  
Potato Leaf ◽  
Microwave Assisted ◽  
Color Quality ◽  
The Impact

The study aimed to evaluate the effects of process parameters (time and raw material weight (RMW)) of conventional (boiling for 10–45 min) and microwave-assisted (2–8 min) aqueous extraction on the color quality (i.e., lightness (L*), chroma (C*), and hue (H°) of anthocyanin –based colorants of red and Inubi sweet potato (Ipomoea batatas L.) leaves. Using response surface methodology, it was found that RMW and boiling time (BT) and microwave time (MT) generally had a significant (p < 0.05) effect on the color quality of the extract from both extraction methods. The effects were found to vary depending on the extraction method and variety of the leaves used. Both extraction methods produced a brown to brick-red extract from the Inubi variety that turned red-violet to pink when acidified. The red sweet potato leaves produced a deep violet colored extract that also turned red-violet when acidified. It is recommended that the anthocyanin content of the extracts be measured to validate the impact of the methods on the active agent. Nevertheless, the outcomes in this study may serve as baseline data for further studies on the potential of sweet potato leaf colorants (SPLC) as a colorant with functional properties.

Process optimization for aqueous extraction of reducing sugar from cashew apple bagasse: A potential, low cost substrate

LWT ◽  
2011 ◽  
Vol 44 (1) ◽  
pp. 62-66 ◽  
Author(s):  
Arindam Kuila ◽  
Anshu Singh ◽  
Mainak Mukhopadhyay ◽  
Rintu Banerjee
Keyword(s):  
Process Optimization ◽  
Low Cost ◽  
Reducing Sugar ◽  
Aqueous Extraction ◽  
Cashew Apple Bagasse ◽  
Cashew Apple ◽  
Low Cost Substrate

scholarly journals Aqueous extraction of anions from coal and fly ash followed by ion-chromatographic determination

2016 ◽  
Vol 81 (12) ◽  
pp. 1441-1453
Author(s):  
Aleksandra Tasic ◽  
Ivana Sredovic-Ignjatovic ◽  
Ljubisa Ignjatovic ◽  
Danijel Djuranovic ◽  
Malisa Antic
Keyword(s):  
Fly Ash ◽  
Ph Value ◽  
Chromatographic Determination ◽  
Aqueous Extraction ◽  
Microwave Assisted Extraction ◽  
Ultrasound Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Coal Particles ◽  
Ultrasound Assisted

Three different techniques were applied for the aqueous extraction of anions from coal and fly ash: rotary mixer- and ultrasonic-assisted extraction with different duration time, and microwave-assisted extraction at different temperatures. Validation showed that the ion-chromatographic method was suitable for the analysis of anions in coal and fly ash extracts. The variations in the amounts of anions using different extraction times during rotary-assisted extraction were minimal for all investigated anions. The efficiency of ultrasound-assisted extraction of anions from coal depended on the sonication time and was highest at 30 min. The ultrasound-assisted extraction was less efficient for the extraction of anions from fly ash than rotary-assisted extraction. Increase of temperature in the microwave-assisted extraction had a positive effect on the amounts of all anions extracted from coal and sulphate from fly ash, while the amounts of fluoride and chloride in fly ash extracts decreased. The microwave-assisted extraction of coal at 150?C was compared with standard ASTM methods, and results were in good agreement only for chloride. Changes in the pH value and conductivity during ultrasound-assisted extraction were measured in order to explain changes on the surface of coal particles in contact with water and different processes that occur under environmental conditions.

Acidic pH based microwave-assisted aqueous extraction of seed oil from yellow horn (Xanthoceras sorbifolia Bunge.)

2013 ◽  
Vol 43 ◽  
pp. 420-426 ◽  
Author(s):  
Xue-Jin Qu ◽  
Yu-Jie Fu ◽  
Meng Luo ◽  
Chun-Jian Zhao ◽  
Yuan-Gang Zu ◽  
...  
Keyword(s):  
Seed Oil ◽  
Aqueous Extraction ◽  
Acidic Ph ◽  
Microwave Assisted
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