scholarly journals Ultrasonic-Assisted Extraction of Raspberry Seed Oil and Evaluation of Its Physicochemical Properties, Fatty Acid Compositions and Antioxidant Activities

PLoS ONE ◽  
2016 ◽  
Vol 11 (4) ◽  
pp. e0153457 ◽  
Author(s):  
Hui Teng ◽  
Lei Chen ◽  
Qun Huang ◽  
Jinli Wang ◽  
Qiyang Lin ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Physicochemical Properties ◽  
Seed Oil ◽  
Antioxidant Activities ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Fatty Acid Compositions

scholarly journals Optimization of Ultrasonic-Assisted Extraction, Characterization, and Antioxidant Activities of Polysaccharides From Sojae Semen Praeparatum

2021 ◽  
Vol 16 (5) ◽  
pp. 1934578X2110206
Author(s):  
Yongshuai Jing ◽  
Ruijuan Zhang ◽  
Lan Li ◽  
Danshen Zhang ◽  
Yu Liu ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Deae Cellulose ◽  
Chemical Compositions ◽  
Hydroxyl Groups ◽  
Ultrasonic Frequency ◽  
Ultrasonic Power ◽  
Assisted Extraction ◽  
Ultrasonic Time ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

In this study, response surface methodology (RSM) was used to optimize the ultrasonic-assisted extraction parameters of Sojae Semen Praeparatum polysaccharides (SSPP-80), the optimum conditions were determined as follows: ultrasonic frequency of 100 W, ultrasonic power of 80 Hz, ultrasonic temperature of 52℃, ultrasonic time of 23 minutes, and liquid to raw material ratio of 40 mL/g. Based on these conditions, polysaccharides extraction rate was 7.72% ± 0.26%. Then, 2 novel polysaccharides (SSPP-80‐1, SSPP-80‐2) were isolated from SSPP by DEAE-cellulose 52 chromatography. The chemical compositions, physicochemical properties, and structure of SSPPs were investigated by simultaneous thermal analyzer (TGA), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FI-IR), and high-performance liquid chromatography (HPLC). The results showed that SSPP-80 and 2 fractions were mainly composed of mannose (Man), glucose (Glc), galactose (Gal), xylose (Xyl), and arabinose (Ara). In addition, the antioxidant activities were evaluated against the DPPH and hydroxyl radical in vitro, the IC50 of SSPP-80, SSPP-80‐1 and SSPP-80‐2 against DPPH free radical were 4.407, 8.267, and 5.204 mg/mL, respectively, whereas the IC50values for removing hydroxyl groups were 5.318, 3.516, and 4.016 mg/mL, respectively. It demonstrated that SSPP-80 and 2 fractions had certain antioxidant activity. Theoretical basis for use of Sojae Semen Praeparatum polysaccharides was provided by this study.

scholarly journals Green and Efficient PEG-Based Ultrasonic-Assisted Extraction of Polysaccharides from Tree Peony Pods and the Evaluation of Their Antioxidant Activity In Vitro

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaonan Zhang ◽  
Qingfeng Ban ◽  
Xibo Wang ◽  
Zhongjiang Wang
Keyword(s):  
Galacturonic Acid ◽  
Antioxidant Activities ◽  
Irradiation Time ◽  
Ultrasound Irradiation ◽  
Molar Ratio ◽  
Precolumn Derivatization ◽  
Tree Peony ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

We adopted and developed an ultrasonic-assisted extraction method to obtain polysaccharides from tree peony pods using polyethylene glycol (PEG) as the solvent. The technological parameters have been designed as a single factor to enhance the tree peony pod polysaccharide extraction yield. Specific conditions (ultrasound irradiation power, 250 W; ultrasound irradiation time, 30 min; reaction temperature 50°C; liquid-solid ratio, 25 mL/g; and concentration of PEG, 0.2 g/mL) generated an experimental yield of 14.14%  ± 0.44%. Subsequently, the monosaccharide composition of the tree peony pod polysaccharides was determined by HPLC using a 1-phenyl-3-methyl-5-pyrazolone precolumn derivatization method. The results indicated that tree peony pod polysaccharides contained mannoses, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, arabinose, and fucose with a molar ratio of 1.44 : 2.87 : 0.32 : 18.99 : 3.99 : 10.21 : 0.96 : 1.85 : 0.21. The tree peony pod polysaccharides obtained are mainly galacturonic acid and galactose, which are acidic polysaccharides. Finally, the antioxidant activities (DPPH and FRAP) of the tree peony pod polysaccharides were assessed, and the compounds exhibited moderate antioxidant activities.

Ultrasonic-Assisted Extraction and Antioxidant Activities of Polysaccharides from Radix astragali

2013 ◽  
Vol 864-867 ◽  
pp. 549-552 ◽  
Author(s):  
Ming Wu ◽  
Chuan Fu Ma ◽  
Jun Man Kan ◽  
Li Quan Guo
Keyword(s):  
Superoxide Anion ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Ultrasonic Power ◽  
Extraction Temperature ◽  
Radix Astragali ◽  
Assisted Extraction ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction ◽  
Solid Liquid

Ultrasonic-assisted extraction (UAE) method was used to polysaccharides from Radix Astragali (RAP), and the orthogonal test was applied to optimize extraction conditions. Furthermore, the antioxidant activities of RAP were evaluated by DPPH and superoxide anion radical scavenging activities assay. The results indicated that the optimal conditions for RAP extraction as followings: solid/liquid ratios of 1:20, extraction time of 10 min, ultrasonic power of 65 W and extraction temperature of 60°C. Meanwhile, RAP had relatively higher scavenging activities on DPPH and superoxide anion radicals.

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