Influence of Accelerated Solvent Extraction and Ultrasound-Assisted Extraction on the Anthocyanin Profile of DifferentVacciniumSpecies in the Context of Statistical Models for Authentication

2015 ◽  
Vol 63 (34) ◽  
pp. 7532-7538 ◽  
Author(s):  
Peter Heffels ◽  
Fabian Weber ◽  
Andreas Schieber
Keyword(s):  
Solvent Extraction ◽  
Statistical Models ◽  
Accelerated Solvent Extraction ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Anthocyanin Profile ◽  
Ultrasound Assisted

scholarly journals Accelerated Solvent Extraction as a Green Tool for the Recovery of Polyphenols and Pigments from Wild Nettle Leaves

Processes ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 803
Author(s):  
Maja Repajić ◽  
Ena Cegledi ◽  
Valentina Kruk ◽  
Sandra Pedisić ◽  
Fırat Çınar ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Antioxidant Capacity ◽  
Accelerated Solvent Extraction ◽  
Ultrasound Assisted Extraction ◽  
Extraction Solvent ◽  
Green Approach ◽  
Assisted Extraction ◽  
Chlorophylls A And B ◽  
Different Temperatures ◽  
Ultrasound Assisted

This study aimed to investigate the performance of accelerated solvent extraction (ASE) as a green approach for the recovery of polyphenols and pigments from wild nettle leaves (NL). ASE was operated at different temperatures (20, 50, 80 and 110 °C), static times (5 and 10 min) and cycle numbers (1–4) using ethanol (96%) as an extraction solvent. In order to compare the efficiency of ASE, ultrasound assisted extraction (UAE) at 80 °C for 30 min was performed as a referent. Polyphenol and pigment analyses were carried out by HPLC and antioxidant capacity was assessed by ORAC. Seven polyphenols from subclasses of hydroxycinnamic acids and flavonoids, along with chlorophylls a and b and their derivatives and six carotenoids and their derivatives were identified and quantified. Chlorogenic acid was the most abundant polyphenol and chlorophyll a represented the dominant pigment. ASE conditions at 110 °C/10 min/3 or 4 cycles proved to be the optimal for achieving the highest yields of analyzed compounds. In comparison with UAE, ASE showed better performance in terms of yields and antioxidants recovery, hence delivering extract with 60% higher antioxidant capacity. Finally, the potential of NL as a functional ingredient from natural sources can be successfully accessed by ASE.

Determination of ochratoxin A and citrinin in fruits using ultrasound-assisted solvent extraction followed by dispersive liquid–liquid microextraction with HPLC with fluorescence detection

2016 ◽  
Vol 8 (7) ◽  
pp. 1586-1594 ◽  
Author(s):  
Chunqiang Ruan ◽  
Xue Diao ◽  
Na Li ◽  
He Zhang ◽  
Yan Pang ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Ochratoxin A ◽  
Ultrasound Assisted Extraction ◽  
Novel Approach ◽  
Assisted Extraction ◽  
Fruit Samples ◽  
Ultrasound Assisted ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

A novel approach which uses ultrasound-assisted extraction (USAE) combined with dispersive liquid–liquid microextraction (DLLME) was proposed for the preconcentration of ultra amounts of ochratoxin A and citrinin in fruit samples.

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.

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).

scholarly journals Optimization of Extraction Conditions for Determination of Tiliroside in Tilia L. Flowers Using an LC-ESI-MS/MS Method

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Aleksandra Pieczykolan ◽  
Wioleta Pietrzak ◽  
Renata Nowak ◽  
Józefina Pielczyk ◽  
Karolina Łamacz
Keyword(s):  
Solvent Extraction ◽  
High Efficiency ◽  
Wide Spectrum ◽  
Extraction Methods ◽  
Accelerated Solvent Extraction ◽  
Extraction Techniques ◽  
Ultrasound Assisted Extraction ◽  
Considerable Saving ◽  
Esi Ms ◽  
Assisted Extraction

Tiliroside exhibits a wide spectrum of effects on the human body; considering expensive synthesis of tiliroside, linden trees seem to be a good source of this compound. For the first time, 46 various extraction methods were developed to receive tiliroside from Tilia L., including ultrasound-assisted extraction, maceration, maceration with stirring, accelerated solvent extraction, and extraction under reflux. The effects of extraction techniques, solvents, additives, and temperature on the content of tiliroside were studied using analytical and statistical methods. A new, rapid, simple, sensitive, and selective liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) method was developed to determine the content of tiliroside in Tilia L. flowers. The LC-ESI-MS/MS analysis demonstrated the highest content of tiliroside in Tilia L. flowers obtained using accelerated solvent extraction (ASE) where 70% ethanol with addition of 1% acetic acid was used as a solvent (7.400 ± 0.019 mg of tiliroside per g dry extract).The results showed that the extracts of Tiliae inflorescentia contained large amounts of tiliroside; therefore, they are good sources of this compound. Moreover, ASE was found to be superior to other extraction techniques due to its high efficiency as well as considerable saving of time and solvent.

scholarly journals Accelerated Solvent Extraction of Antioxidant Compounds from Gardeniae Fructus and Its Acetylcholinesterase Inhibitory and PC12 Cell Protective Activities

Foods ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2805
Author(s):  
Yiling Fan ◽  
Xueying Li ◽  
Lan Ding ◽  
Weiying Zhou ◽  
Guangzi Xu ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Pc12 Cells ◽  
Antioxidant Activities ◽  
Compositional Analysis ◽  
Accelerated Solvent Extraction ◽  
Neuroprotective Activity ◽  
Antioxidant Compounds ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Medicinal Food

Gardeniae fructus is a common neuroprotective medicinal food in China, however the extraction efficiency and mixture activities are rarely mentioned. In this study, accelerated solvent extraction (ASE) parameters were optimized by a response surface methodology to extract antioxidants from Gardeniae fructus. Neuroprotective activity was evaluated using H2O2 and amyloid-β25–35 peptide-treated PC12 cells. By comparing with three other extract methods (i.e., heated refluxing extraction (HRE), ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE)), it was found that the yield (35.10%), total iridoids (27.69%), total flavonoid (6.12%) content, antioxidant activities (IC50 on DPPH, 164.46 µg/mL; FRAP value 4703.54 μmol/L), and acetylcholinesterase inhibitory ability (IC50 92.58 µg/mL) of ASE extract under the optimal condition (150 °C temperature, 10 min static time, 60% ethanol, 2 extract cycles) were significantly higher than other extract methods. The strongest ability to protect PC12 cells from damage was also present in ASE extract, as evidenced by decreasing lactate dehydrogenase and malondialdehyde levels, elevating superoxide dismutase and glutathioneperoxidase activities. Compositional analysis indicated that the extremely high crocetin level in ASE extract (1.30 μg/mg) may offer great potential. Our results indicated that ASE is a proper extraction method that could offer great potential for finding the neuroprotective ability of Gardeniae fructus for the treatment of AD.

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