scholarly journals Homogenate-Ultrasound-Assisted Ionic Liquid Extraction of Total Flavonoids from Selaginella involven: Process Optimization, Composition Identification, and Antioxidant Activity

ACS Omega ◽  
2021 ◽  
Author(s):  
Jie Lei ◽  
Lei Zhu ◽  
Yu Zheng ◽  
Ming Yu ◽  
Gang Li ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ionic Liquid ◽  
Process Optimization ◽  
Liquid Extraction ◽  
Total Flavonoids ◽  
Ultrasound Assisted

Antioxidant Activity of Sorbus sibirica Fruit Extracts

2014 ◽  
Vol 900 ◽  
pp. 267-274 ◽  
Author(s):  
Jie Wei ◽  
Jia Shi ◽  
Jun Gao ◽  
Zhi Quan Zhou ◽  
Jun Gang Fan
Keyword(s):  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Free Radicals ◽  
Superoxide Anion ◽  
Reducing Power ◽  
In Vitro Assays ◽  
Total Flavonoids ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted

Sorbus sibirica fruits, popularly consumed as tea, is believed to promote healthy, relieve a cough. The literature reporting pharmacological studies related to Sorbus sibirica is very limited. Thus, The antioxidant activities of extracts from Sorbus sibirica fruits were evaluated using various in vitro assays including total flavonoid contents, total antioxidant activity, reducing power, lipid peroxidation inhibitory activity, scavenging hydroxyl and superoxide anion free radicals activity, and protective effects against DNA and protein damages. We selected the process of ultrasound-assisted extraction for total flavonoids from Sorbus sibirica fruits according to the extraction rate of total flavonoids. Results showed that the content of total flavonoids was 0.82 g per 100 g dry fruits sample obtained with ultrasound-assisted extraction method. The extracts exhibited strong scavenging capability with respect to hydroxyl and superoxide anion free radicals, and effectively inhibited the lipid peroxidation of polyunsaturated fatty acids. They also had good reducing power and protection against DNA and protein damage. Therefore, they might offer an important source of effective natural antioxidants in the food and cosmetic industries.

scholarly journals EFFECT OF PRESSURE LIQUID EXTRACTION AND ULTRASONIC IRRADIATION FREQUENCY ON INULIN, PHENOLIC CONTENT AND ANTIOXIDANT ACTIVITY IN BURDOCK (Arctium lappa L.) ROOTS

2020 ◽  
Vol 19 (3) ◽  
pp. 125-133
Author(s):  
Nadezhda Petkova ◽  
Ivan Ivanov ◽  
Dasha Mihaylova ◽  
Anna Lante
Keyword(s):  
Antioxidant Activity ◽  
High Performance ◽  
Phenolic Content ◽  
Antioxidant Activities ◽  
Folk Medicine ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Arctium Lappa ◽  
Irradiation Frequency ◽  
Ultrasound Assisted

Burdock (Arctium lappa L.) roots are traditionally used in folk medicine as diuretic and curing rheumatism, gastritis, gout, throat pain, arthritis and rashes. These pharmacological properties are due to many bioactive compounds such as flavonoids and fructooligosaccharides. Nowadays, the the application of  “green” methods for extraction of natural compounds gains more and more attention. The object of the current research was to determine inulin and sugars content, phenolic content and antioxidant potential in 70% ethanol and water extracts obtained by two “green“ extraction methods, namely pressure-liquid extraction and ultrasound-assisted techniques. The content of total fructans, as well as inulin and sugars were analyzed by spectrophotometric resorcinol-thiourea method and high-performance liquid chromatography with refractive index detection. Total phenols and flavonoids were determined by Folin-Chiocalteu and Al(NO3)3 reagents. Antioxidant activity was evaluated by four reliable methods (DPPH, ABTS, FRAP and CUPRAC). The established inulin content varied from 0.27 to 4.0 g/100 g dw in prevalence of the ultrasound-assisted extract obtained with water. Additionally, the established phenolic compounds content (from 10.35 to 18.16 mg gallic acid equivalent (GAE)/g dw) and antioxidant activities demonstrated the burdock roots as potential source phytonutrients with health beneficial properties.

Ultrasound Assisted Solid-Liquid Extraction Devices - Harnessing Active Ingredients from Plant materials – Overview and Analysis

2020 ◽  
Vol 13 ◽  
Author(s):  
Venkatasubramanian Sivakumar
Keyword(s):  
Mass Transfer ◽  
Cell Wall ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Liquid Extraction ◽  
Active Ingredients ◽  
Plant Materials ◽  
Ultrasound Assisted ◽  
Solid Liquid Extraction ◽  
Solid Liquid

Background: In the growing environmental concern use of natural products, efficient processes and devices are necessary. Solid-Liquid extraction of active Ingredients from Plant materials is one of the important unit operations in Chemical Engineering and need to be enhanced. Objectives: Since, these active ingredients are firmly bound to the plant cell wall membrane, which pose mass-transfer resistance and need to get detached through the use of suitable process intensification tools such as ultrasound and suitable devices. Therefore, detailed analysis and review is essential on development made in this area through Publications and Patents. Hence, the present paper illustrates the development of ultrasound assisted device for solid-liquid extraction are presented in this paper. Methods: Advantages such as % Yield, Reduction in extraction time, use of ambient conditions, better process control, avoidance or minimizing multi stage extraction could be achieved due to the use of ultrasound in extraction as compared to conventional processes. Conclusions: Use of ultrasound to provide significant improvements in the extraction of Vegetable tannins, Natural dyes for application in Leather processing has been demonstrated and reported earlier. These enhancement could be possible through various effects of ultrasound such as better flow of solvents through micro-jet formation, mass transfer enhancement due to rupture of plant cell wall membranes through acoustic cavitation, better leaching due to micro-mixing and acoustic streaming effects. This approach would minimize material wastage; thereby, leading to eco-conservation of plant materials, which is very much essential for better environment. Hence, various methods and design for application of ultrasound assisted solid-liquid extractor device are necessary.

Ionic liquid extraction of silkworm pupa protein and its biological characteristics

2021 ◽  
Author(s):  
Qing-Lei Zeng ◽  
Ning Zhang ◽  
Yue-Yue Zhang ◽  
Xiang-Dong Xin ◽  
Thomas Attaribo ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Extraction ◽  
Biological Characteristics ◽  
Silkworm Pupa

scholarly journals Optimization of Ultrasound-Assisted Extraction of Phloretin and Other Phenolic Compounds from Apple Tree Leaves (Malus domestica Borkh.) and Comparison of Different Cultivars from Estonia

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 189
Author(s):  
Sana Ben-Othman ◽  
Hedi Kaldmäe ◽  
Reelika Rätsep ◽  
Uko Bleive ◽  
Alar Aluvee ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Apple Tree ◽  
Maximum Yield ◽  
Plant Secondary Metabolites ◽  
Polyphenolic Compounds ◽  
Tree Leaves ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Promising Source

Polyphenolic compounds, plant secondary metabolites essential for plant survival, are known for their high antioxidant and anti-inflammatory activity. In addition, several polyphenols, such as phloretin, also have potential antiviral effects, making these compounds potential ingredients of biofunctional foods. A promising source for the extraction of phloretin is a by-product of apple production—apple tree leaves. Focusing on green technologies, the first aim of the present study was to optimize the direct ultrasound-assisted extraction conditions to gain the maximum yield of phloretin from air-dried apple leaves. For the optimization of process parameters, we applied the response surface method with Box–Behnken design. The optimal extraction conditions were extraction time 14.4 min, sonication amplitude 10% and 10 g of sample per 100 mL solvent (70% ethanol, w/w). Using these conditions, we assessed the content of individual and total polyphenolic compounds along with antioxidant activity in the leaves of different autumn and winter apple cultivars grown in Estonia. The analyses were carried out with chromatographic (HPLC-DAD-MS/MS) and spectrophotometric methods. The phloretin concentration ranged from 292 to 726 µg/g and antioxidant activity from 6.06 to 11.42 mg GA eq./g, these being the highest in the local winter cultivars ‘Paide taliõun’ and ‘Tellissaare’, respectively.

scholarly journals Correction to Ultrasonic-Assisted Ionic Liquid Extraction of Two Biflavonoids from Selaginella tamariscina

ACS Omega ◽  
2021 ◽  
Vol 6 (15) ◽  
pp. 10505-10505
Author(s):  
Yongmei Jiang ◽  
Sen Wang ◽  
Ming Yu ◽  
Di wu ◽  
Jie Lei ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Extraction ◽  
Ultrasonic Assisted ◽  
Selaginella Tamariscina
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