Ultrasound-assisted extraction of Catharanthus roseus (L.) G. Don (Patricia White cultivar) stem for maximizing saponin yield and antioxidant capacity

2018 ◽  
Vol 42 (5) ◽  
pp. e13597 ◽  
Author(s):  
Hong Ngoc Thuy Pham ◽  
Quan Van Vuong ◽  
Michael C. Bowyer ◽  
Christopher J. Scarlett
Keyword(s):  
Antioxidant Capacity ◽  
Catharanthus Roseus ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted

scholarly journals Green solvents and Ultrasound-Assisted Extraction of bioactive orange (Citrus sinensis) peel compounds

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Abigail Montero-Calderon ◽  
Clara Cortes ◽  
Ana Zulueta ◽  
Ana Frigola ◽  
Maria J. Esteve
Keyword(s):  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Orange Peel ◽  
Green Solvents ◽  
Ultrasound Assisted Extraction ◽  
Total Carotenoids ◽  
Carotenoid Concentration ◽  
Assisted Extraction ◽  
Physicochemical Evaluation ◽  
Ultrasound Assisted

Abstract Byproducts such as orange peel have potential uses because of their bioactive compounds, which are important for their potential to reduce the risk factors of diseases caused by aging. The lack of effective techniques and the high levels of pollution produced by the conventional extraction of bioactive compounds using organic solvents have highlighted the need to enhance the ‘green chemistry’ trend. This study evaluates the use of ultrasound to extract bioactive compounds from orange peel. The antioxidant capacity, phenolic content, ascorbic acid, total carotenoids, and HPLC profile of phenolic compounds from orange peel extracts were obtained by a physicochemical evaluation. The results demonstrate that the optimal conditions for the ultrasound-assisted extraction of bioactive orange peel compounds were a power of 400 W, a time of 30 min, and 50% ethanol in water. These conditions were used to obtain a total carotenoid concentration of 0.63 mg ß-carotene/100 g, vitamin C concentration of 53.78 mg AA/100 g, phenolic concentration of 105.96 mg GAE/100 g, and antioxidant capacity of ORAC = 27.08 mM TE and TEAC = 3.97 mM TE. The major phenolic compound identified in all orange peel extracts was hesperidin, with a maximum concentration of 113.03 ± 0.08 mg/100 g.

scholarly journals A Green Ultrasound-Assisted Extraction Optimization of the Natural Antioxidant and Anti-Aging Flavonolignans from Milk Thistle Silybum marianum (L.) Gaertn. Fruits for Cosmetic Applications

Antioxidants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 304 ◽  
Author(s):  
Samantha Drouet ◽  
Emilie A. Leclerc ◽  
Laurine Garros ◽  
Duangjai Tungmunnithum ◽  
Atul Kabra ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Dry Weight ◽  
International Standards ◽  
In Vitro Assays ◽  
Milk Thistle ◽  
Silybum Marianum ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Silybum marianum (L.) Gaertn. (aka milk thistle) constitutes the source of silymarin (SILM), a mixture of different flavonolignans and represents a unique model for their extraction. Here we report on the development and validation of an ultrasound-assisted extraction (UAE) method of S. marianum flavonolignans follow by their quantification using LC system. The optimal conditions of this UAE method were: aqueous EtOH 54.5% (v/v) as extraction solvent, with application of an ultrasound (US) frequency of 36.6 kHz during 60 min at 45 °C with a liquid to solid ratio of 25:1 mL/g dry weight (DW). Following its optimization using a full factorial design, the extraction method was validated according to international standards of the association of analytical communities (AOAC) to ensure precision and accuracy in the quantitation of each component of the SILM mixture. The efficiency of this UAE was compared with maceration protocol. Here, the optimized and validated conditions of the UAE allowed the highest extraction yields of SILM and its constituents in comparison to maceration. During UAE, the antioxidant capacity of the extracts was retained, as confirmed by the in vitro assays CUPRAC (cupric ion reducing antioxidant capacity) and inhibition of AGEs (advanced glycation end products). The skin anti-aging potential of the extract obtained by UAE was also confirmed by the strong in vitro cell-free inhibition capacity of both collagenase and elastase. To summarize, the UAE procedure presented here is a green and efficient method for the extraction and quantification of SILM and its constituents from the fruits of S. marianum, making it possible to generate extracts with attractive antioxidant and anti-aging activities for future cosmetic applications.

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.

scholarly journals Ultrasound-Assisted Extraction of Bioactive Compounds and Antioxidant Capacity for the Valorization of Elaeocarpus serratus L. Leaves

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1218
Author(s):  
Ying-Hsuan Chen ◽  
Chun-Yao Yang
Keyword(s):  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Total Phenolic ◽  
Solvent Ratio ◽  
Order Kinetic ◽  
Ultrasound Assisted Extraction ◽  
Sulfate Heptahydrate ◽  
Antioxidant Power ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Elaeocarpus serratus L. leaves contain significant polyphenols, flavonoids, and myricitrin with medicinal property, which are byproducts after harvest and can be recovered for potential food applications. In this study, the effective extraction method for bioactive compounds and myricitrin from Elaeocarpus serratus L. leaves was investigated by comparing ultrasound-assisted extraction (UAE) and shaking-assisted extraction (SAE) for total phenolic content (TPC), total flavonoid content (TFC), myricitrin, and antioxidant capacity (as ferric reducing antioxidant power, FRAP). A first-order kinetic model of extraction was also proposed to correlate the observed extraction rate coefficient and limiting concentration of myricitrin in various solvents. Using defatted leaves (DL) as the substrate at the UAE condition of 95% ethanol with 1/10 (g/mL) of DL to solvent ratio under 40 kHz/300 W of ultrasound, 26.63% of yield of extract, and 199.75 mg-ferrous-sulfate-heptahydrate-equivalent/g-DL of FRAP were obtained. Further, the bioactive compounds extracted were 92.35 mg-gallic-acid-equivalent/g-DL of TPC, 53.14 mg-rutin-equivalent/g-DL of TFC, and 4.41 mg/g-DL of myricitrin, which were 1.53, 1.44, and 1.4 folds using SAE at 120 rpm, respectively. This showed that UAE was more efficient than SAE in bioactive compounds recovery for valorization of Elaeocarpus serratus L. leaves.

scholarly journals Antioxidant capacity and UPLC–PDA ESI–MS polyphenolic profile of Citrus aurantium extracts obtained by ultrasound assisted extraction

2018 ◽  
Vol 55 (12) ◽  
pp. 5106-5114 ◽  
Author(s):  
Covarrubias-Cárdenas Ana ◽  
Patrón-Vázquez Jesús ◽  
Espinosa-Andrews Hugo ◽  
Ayora-Talavera Teresa ◽  
García-Cruz Ulises ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Citrus Aurantium ◽  
Ultrasound Assisted Extraction ◽  
Esi Ms ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Polyphenolic Profile

scholarly journals Ultrasound-Assisted Extraction of GAC Peel: An Optimization of Extraction Conditions for Recovering Carotenoids and Antioxidant Capacity

Processes ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 8 ◽  
Author(s):  
Hoang V. Chuyen ◽  
Paul D. Roach ◽  
John B. Golding ◽  
Sophie E. Parks ◽  
Minh H. Nguyen
Keyword(s):  
Antioxidant Capacity ◽  
Extraction Time ◽  
Carotenoid Content ◽  
Ultrasonic Power ◽  
Optimal Conditions ◽  
Total Carotenoid ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
The Impact

The peel of Gac fruit (Momordica cochinchinensis Spreng.), which is considered as waste of Gac processing, has been found to possess high levels of carotenoids and other antioxidants. This study aimed at determining the optimal conditions of an ultrasound-assisted extraction for recovering carotenoids and antioxidant capacity from Gac peel. A response surface methodology using the Box–Behnken design was employed to investigate the impact of extraction time, temperature and ultrasonic power on the recovery of total carotenoid and antioxidant capacity. The results showed that an extraction time of 76 min, temperature of 50 °C and ultrasonic power of 250 W were the optimal conditions for the extraction. The experimental carotenoid yield and antioxidant capacity obtained under the optimal extraction conditions were validated as 269 mg/100 g DW (dry weight) and 822 µM TE (Trolox equivalent)/100 g DW, respectively. These values were not significantly different from the values predicted by the models. The HPLC analysis for carotenoid composition showed that β-carotene, lycopene and lutein were the principal carotenoids of the extract, which constitute 86% of the total carotenoid content. Based on the obtained results, the ultrasound-assisted extraction using ethyl acetate under the above optimal conditions is suggested for the simultaneous recovery of carotenoids and antioxidant capacity from Gac peel.

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