scholarly journals Extraction of Illegal Dyes from Red Chili Peppers with Cholinium-Based Deep Eutectic Solvents

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Shuqiang Zhu ◽  
Dongling Liu ◽  
Xinyue Zhu ◽  
Along Su ◽  
Haixia Zhang
Keyword(s):  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Raw Material ◽  
Extraction Time ◽  
Solvent Ratio ◽  
Extraction Temperature ◽  
Green Solvents ◽  
Hydrogen Bond Donor ◽  
Relative Standard ◽  
Orange G

Deep eutectic solvents (DESs) as a new kind of green solvents have been used to extract bioactive compounds but there are few applications in extracting chrysoidine dyes. In this study, we developed an ultrasonic-assisted extraction method with choline chloride/hydrogen bond donor (ChCl/HBD) DES for the extraction of chrysoidine G (COG), astrazon orange G (AOG), and astrazon orange R (AOR) in food samples. Some experimental parameters, such as extraction time, raw material/solvent ratio, and temperature, were evaluated and optimized as follows: the ratio of ChCl/HBD, 1 : 2 (v/v); the ratio of sample/DES, 1 : 10 (g/mL); extraction time, 20 min; extraction temperature, 50°C. Under the optimized conditions, the limits of detection (μg/mL) were 0.10 for COG and 0.06 for AOG and AOR. The relative standard deviations were in the range of 1.2–2.1%. The recoveries of the three dyes were in the range of 80.2–105.0%. By comparing with other commonly used solvents for extracting chrysoidine dyes, the advantages of DESs proved them to be potential extraction solvents for chrysoidine G, astrazon orange G, and astrazon orange R in foods.

Deacidification of Crude Rice Bran Oil (CRBO) to Remove FFA and Preserve γ-Oryzanol Using Deep Eutectic Solvents (DES)

2019 ◽  
Vol 964 ◽  
pp. 109-114 ◽  
Author(s):  
Siti Zullaikah ◽  
Nizar Dwi Wibowo ◽  
I Made Gede Eris Dwi Wahyudi ◽  
M. Rachimoellah
Keyword(s):  
Hydrogen Bond ◽  
Rice Bran ◽  
Rice Bran Oil ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Molar Ratio ◽  
Extraction Temperature ◽  
Hydrogen Bond Donor ◽  
Hydrogen Bond Acceptor ◽  
C 50

High content of free fatty acids (FFA) in crude rice bran oil (CRBO) needs to be separated through deacidification. Generally, deacidification process that is widely used are chemical and physical processes which causes the loss of bioactive compounds (γ-oryzanol) and un-environmentally friendly. The liquid-liquid extraction (LLE) using deep eutectic solvents (DES) to remove FFA and preserve g-oryzanol would be implemented in this study. DES with different hydrogen bond donor (HBD) and hydrogen bond acceptor (HBA) with certain molar ratio such as Choline Chloride (ChCl)-Ethylene glycol 1:2 (DES I), ChCl-Glycerol 1:1 (DES II), ChCl-Urea 1:2 (DES III), ChCl-Oxalic acid 1:2 (DES IV), and Betaine Monohydrate-Glycerol 1:8 (NADES) were used as solvent to extract FFA from dewaxed/degummed RBO (DDRBO) for certain extraction time (30, 60, 120, 180, and 240 min) and extraction temperature (30°C, 40°C, 50°C, 60°C, and 70°C) under stirring (200 rpm). Deacidification using DES I for 240 min. and temperature of 50 °C was the optimum solvent to remove FFA (19.03 ± 2.33 %) and preserve g-oryzanol (recovery of g-oryzanol was 51.30 ± 1.77 %). The results also revealed that the longer time of extraction would be increased removal of FFA and decreased recovery of g-oryzanol. The higher temperature of extraction would be increased removal of FFA. In this work, temperature of 50 °C was the best extraction temperature of FFA since DES has highest solubility at this temperature.

Optimization of Extraction Process of Lycopene from Watermelon (Citrullus lanatus) by Response Surface Methodology

2011 ◽  
Vol 140 ◽  
pp. 385-393 ◽  
Author(s):  
Xian Feng Shi ◽  
Yuan Xu ◽  
Yu Hua Li ◽  
Hong Xia Zeng ◽  
Yu Hong Sun
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Citrullus Lanatus ◽  
Extraction Process ◽  
Quadratic Equation ◽  
Raw Material ◽  
Extraction Time ◽  
Solvent Ratio ◽  
Extraction Temperature ◽  
Extraction Solvent

The extraction processing of lycopene from watermelon was investigated in this paper. Based on single factor experiments, response surface methodology (RSM) was adopted to study the key parameters such as number of extraction, extraction temperature, extraction time in order to increase extraction rate of lycopene. A second order quadratic equation was established and the applicability of model and interaction involved factors on predicting the lycopene extracting content was verified. The results indicated that the optimum extraction conditions were hexane (containing 2% dichloromethane) as extraction solvent, ratio of solvent to raw material of 3:1 (mL/g), number of extraction of 2, extraction time of 1.9 h and extraction temperature of 29.8°C. Under these conditions the extracting content of lycopene was 14.71±0.22 mg/kg, which is well in agreement with value predicted by the model.

scholarly journals Research on polyphenols extraction from Polygonum multiflorum Thunb. roots

2020 ◽  
Vol 66 (1) ◽  
pp. 9-17
Author(s):  
Le Pham Tan Quoc
Keyword(s):  
Phenolic Compounds ◽  
Extraction Process ◽  
Raw Material ◽  
Extraction Time ◽  
Initial Structure ◽  
Solvent Ratio ◽  
Water Mixture ◽  
Extraction Temperature ◽  
Polygonum Multiflorum ◽  
Dpph Method

SummaryIntroduction:Polygonum multiflorum Thunb. is a herbal common plant in Asia, with many beneficial health effects for human because it contains many bioactive compounds which can prevent some diseases, for instance such as cardiovascular diseases, cancers, neurodegenerative diseases, etc.Objective: The purpose of this research is to point out the effects of extraction factors such as type of solvent, material/solvent ratio (w/v), solvent concentration (%, v/v), temperature (°C) and extraction time on the extraction yield of phenolic compounds from Polygonum multiflorum Thunb. roots, for instance, total polyphenol content (TPC) and antioxidant capacity (AC).Methods: The raw material consisting of Polygonum multiflorum Thunb root was extracted by the reflux maceration method. TPC and AC of received extract were evaluated by the Folin-Ciocalteu technique and DPPH method with Trolox as a standard agent.Results: The optimal conditions for the extraction process were acetone-water mixture (60%, v/v) as a solvent, material/solvent ratio of 1/40, extraction temperature of 50°C and extraction time of 90 minutes. The surface structure of material after extraction process changed insignificantly compared with the initial structure.Conclusion: The results showed that TPC and AC obtained the best values (38.60±0.56 mg GAE/g DW (dry weight) and 298.15±2.99 μmol TE/g DW, respectively) at optimal extraction conditions. In addition, some phenolic compounds were detected in the extract such as gallic acid, catechin and resveratrol.

scholarly journals Green Extraction Methods for Active Compounds from Food Waste—Cocoa Bean Shell

Foods ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 140 ◽  
Author(s):  
Pavlović ◽  
Jokić ◽  
Jakovljević ◽  
Blažić ◽  
Molnar
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Extraction Methods ◽  
Cocoa Bean ◽  
Extraction Temperature ◽  
Future Trends ◽  
Active Compounds ◽  
Dpph Method

This is the first report on the extraction of cocoa bean shell (CBS) using deep eutectic solvents (DESs). Screening results with 16 different choline chloride-based DESs showed how choline chloride:oxalic acid DES was the most suitable solvent for the extraction of the bioactive compounds from CBS and that concentrations varied greatly depending on the used solvent. The DES extraction was compared to the DESs coupled with microwave extraction (MAE), and the yields of the extracted compounds were higher for DES/MAE. For theobromine, the obtained yields for DES extraction were 2.145–4.682 mg/g, and for caffeine, were 0.681–1.524 mg/g, whereas for DES/MAE, the same compounds were obtained in 2.502–5.004 mg/g and 0.778–1.599 mg/g. Antioxidant activity was also determined, using DPPH method, obtaining 24.027–74.805% activity for DES extraction and 11.751–55.444% for DES/MAE. Water content significantly influenced the extraction of targeted active compounds from CBS, whereas extraction time and temperature did not show statistically significant influence. The extraction temperature only influenced antioxidant activity. The study demonstrated how extraction using DES and microwaves could be of a great importance in the future trends of green chemistry for the production of CBS extracts rich in bioactive compounds.

Alcoholysis of polyethylene terephthalate to produce dioctyl terephthalate using choline chloride-based deep eutectic solvents as efficient catalysts

2019 ◽  
Vol 21 (4) ◽  
pp. 897-906 ◽  
Author(s):  
Lei Zhou ◽  
Xingmei Lu ◽  
Zhaoyang Ju ◽  
Bo Liu ◽  
Haoyu Yao ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Raw Material

To prepare DOTP more cheaply and efficiently, PET was used as a raw material and a ChCl-based DES was synthesized as a catalyst.

scholarly journals Facilely reducing recalcitrance of lignocellulosic biomass by a newly developed ethylamine-based deep eutectic solvent for biobutanol fermentation

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Guochao Xu ◽  
Hao Li ◽  
Wanru Xing ◽  
Lei Gong ◽  
Jinjun Dong ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Lactic Acid ◽  
Lignocellulosic Biomass ◽  
Fossil Fuels ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Specific Yield ◽  
Green Solvents ◽  
Hydrogen Bond Donor ◽  
Total Sugars

Abstract Background Biobutanol is promising and renewable alternative to traditional fossil fuels and could be produced by Clostridium species from lignocellulosic biomass. However, biomass is recalcitrant to be hydrolyzed into fermentable sugars attributed to the densely packed structure by layers of lignin. Development of pretreatment reagents and processes for increasing surface area, removing hemicellulose and lignin, and enhancing the relative content of cellulose is currently an area of great interest. Deep eutectic solvents (DESs), a new class of green solvents, are effective in the pretreatment of lignocellulosic biomass. However, it remains challenging to achieve high titers of total sugars and usually requires combinatorial pretreatment with other reagents. In this study, we aim to develop novel DESs with high application potential in biomass pretreatment and high biocompatibility for biobutanol fermentation. Results Several DESs with betaine chloride and ethylamine chloride (EaCl) as hydrogen bond acceptors were synthesized. Among them, EaCl:LAC with lactic acid as hydrogen bond donor displayed the best performance in the pretreatment of corncob. Only by single pretreatment with EaCl:LAC, total sugars as high as 53.5 g L−1 could be reached. Consecutive batches for pretreatment of corncob were performed using gradiently decreased cellulase by 5 FPU g−1. At the end of the sixth batch, the concentration and specific yield of total sugars were 58.8 g L−1 and 706 g kg−1 pretreated corncob, saving a total of 50% cellulase. Utilizing hydrolysate as carbon source, butanol titer of 10.4 g L−1 was achieved with butanol yield of 137 g kg−1 pretreated corncob by Clostridium saccharobutylicum DSM13864. Conclusions Ethylamine and lactic acid-based deep eutectic solvent is promising in pretreatment of corncob with high total sugar concentrations and compatible for biobutanol fermentation. This study provides an efficient pretreatment reagent for facilely reducing recalcitrance of lignocellulosic materials and a promising process for biobutanol fermentation from renewable biomass.

scholarly journals Deep Eutectic Solvents Based Ultrasonic Extraction of Polysaccharides from Edible Brown Seaweed Sargassum horneri

2020 ◽  
Vol 8 (6) ◽  
pp. 440
Author(s):  
Jinggui Nie ◽  
Danting Chen ◽  
Yanbin Lu
Keyword(s):  
Choline Chloride ◽  
Brown Seaweed ◽  
Deep Eutectic Solvents ◽  
Significant Inhibition ◽  
Hot Water ◽  
Ultrasonic Extraction ◽  
Sargassum Horneri ◽  
Molar Ratio ◽  
Extraction Temperature

In this work, a method for ultrasonic extraction of polysaccharides from Sargassum horneri using deep eutectic solvents was proposed. The studied deep eutectic solvents were composed of choline chloride, 1,2-propanediol and water. Based on the single-factor experiment results, four experimental factors were systematically evaluated, giving the optimal extraction conditions as follows: molar ratio of choline chloride to 1,2-propanediol of 1:2, water content of 30% (v/v), solid-liquid ratio of 1:30 (g/mL), and the extraction temperature of 70 °C. Fourier transform infrared spectroscopy and X-ray diffraction were utilized to investigate changes in the chemical characteristic of extracted polysaccharides. The results indicated that deep eutectic solvents had stronger protein and calcium carbonate removal ability than that of a conventional hot water extraction method. Moreover, in vitro antioxidant activity tests exhibited that the obtained polysaccharides had significant inhibition effects on DPPH and ABTS radicals. The proposed deep eutectic solvents assisted ultrasonic extraction protocol was considered to be a green, fast and effective protocol for extracting polysaccharides from Sargassum horneri.

scholarly journals Review on Carbon Dioxide Absorption by Choline Chloride/Urea Deep Eutectic Solvents

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Rima J. Isaifan ◽  
Abdukarem Amhamed
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Bond ◽  
Ionic Liquids ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Absorption Capacity ◽  
Carbon Dioxide Absorption ◽  
Hydrogen Bond Donor ◽  
Separation Processes ◽  
Hydrogen Bond Acceptor

In the recent past few years, deep eutectic solvents (DESs) were developed sharing similar characteristics to ionic liquids but with more advantageous features related to preparation cost, environmental impact, and efficiency for gas separation processes. Amongst many combinations of DES solvents that have been prepared, reline (choline chloride as the hydrogen bond acceptor mixed with urea as the hydrogen bond donor) was the first DES synthesized and is still the one with the lowest melting point. Choline chloride/urea DES has proven to be a promising solvent as an efficient medium for carbon dioxide capture when compared with amine alone or ionic liquids under the same conditions. This review sheds light on the preparation method, physical and chemical characteristics, and the CO2 absorption capacity of choline chloride/urea DES under different temperatures and pressures reported up to date.

Efficient extraction of major catechins in Camellia sinensis leaves using green choline chloride-based deep eutectic solvents

RSC Advances ◽  
2015 ◽  
Vol 5 (114) ◽  
pp. 93937-93944 ◽  
Author(s):  
Ji Li ◽  
Zhigang Han ◽  
Yongpeng Zou ◽  
Bo Yu
Keyword(s):  
Organic Acids ◽  
Camellia Sinensis ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Green Solvents ◽  
Efficient Extraction

Choline chloride-based deep eutectic solvents (DESs), composed of alcohols, organic acids and saccharides, were used as green solvents for extraction of major catechins inCamellia sinensisleaves.

scholarly journals Deep eutectic solvents aqueous two-phase system based ultrasonically assisted extraction of ursolic acid (UA) from Cynomorium songaricum Rupr.

2017 ◽  
Author(s):  
Xifeng Zhang ◽  
Ji Zhang
Keyword(s):  
Ursolic Acid ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Selective Extraction ◽  
Phase System ◽  
Green Solvents ◽  
Active Components ◽  
Two Phase ◽  
Solid Ratio

Deep eutectic solvents (DESs) are new green solvents that have attracted the attention of the scientific community mainly due to their unique properties and special characteristics, which are different from those of traditional solvents.A method based on ultrasonically assisted deep eutectic solvent aqueous two-phase systems( UAE-DES-ATPS) was developed for extracting ursolic acid (UA) from Cynomorium songaricum Rupr. Four different types of choline chloride-based DESs were prepared.Choline chloride-glucose (ChCl-Glu) exhibited good selective extraction ability. An optimum DES-ATPS of 36% (w/w) ChCl-Glu and 25% (w/w) K2HPO4 was considered to be a satisfactory system for extracting UA. Response surface methodology (RSM) method was used to optimize the extraction of UA using UAE-DES-ATPS. The optimum ultrasound-assisted conditions were as follows: solvent to solid ratio of 15:1 (g/g), ultrasound power of 470 W, and extraction time of 54 min. Compared with the conventional UAE method, the yields were basically the same, but the presented method had higher purity. The structure of UA did not change between pure UA and UA in the upper phase by UV–vis and FT-IR. This approach using ChCl-based DES-ATPS as a novel extraction system and ultrasound as a source of energy provided better choice for the separation of active components from other natural products.

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