scholarly journals Optimization of a green extraction method for the recovery of polyphenols from olive leaf using cyclodextrins and glycerin as co-solvents

2016 ◽  
Vol 53 (11) ◽  
pp. 3939-3947 ◽  
Author(s):  
Ioannis Mourtzinos ◽  
Eleni Anastasopoulou ◽  
Athanasios Petrou ◽  
Spyros Grigorakis ◽  
Dimitris Makris ◽  
...  
Keyword(s):  
Extraction Method ◽  
Olive Leaf ◽  
Green Extraction

scholarly journals The usage of enzyme in ultrasound-assisted enzymatic extraction method and its effect on yield extract from Keji Beling (Strobilanthes crispus.) leaves

2018 ◽  
Vol 67 ◽  
pp. 03002
Author(s):  
Angelina ◽  
Mauhibah Yumna ◽  
Abdullah ◽  
Rita Arbianti ◽  
Tania Surya Utami ◽  
...  
Keyword(s):  
Extraction Method ◽  
Maximum Yield ◽  
Extraction Process ◽  
Enzymatic Extraction ◽  
Bioactive Substances ◽  
Green Extraction ◽  
Strobilanthes Crispus ◽  
Ultrasound Assisted ◽  
Effect On Yield ◽  
Hydrolysis Of

Green extraction process is a method which is used to obtain various plant extracts with minimum impact on the environment. Green extraction will reduce energy consumption, allow use of alternative solvents and renewable natural products, and ensure a safe and high quality extract. Ultrasound-assisted enzymatic extraction (UAEE) is one of green extraction method. UAEE is a mild, efficient and environmental friendly extraction method and it has been adopted for extracting various kinds of compounds. The use of enzyme will catalyze hydrolysis of the cytoderm and glycoproteins, therefore enhancing the release of bioactive substances by disrupting plant cells. The optimum extraction conditions with a maximum yield extract of 48.63% are as follows: the concentration of ethanol is 50% and the amount of added enzyme is 70 mg/g. Crude extract from keji beling leaves is tested using Gas Chromatography and Mass Spectrometry (GC-MS) to identify components that have anti-hypercholesterolemic activity, which are hexadecanoic acid, octadecanoic acid and demethyl squalene.

Determination of phenolic acids in Prunella vulgaris L.: a safe and green extraction method using alcohol-based deep eutectic solvents

2015 ◽  
Vol 7 (21) ◽  
pp. 9354-9364 ◽  
Author(s):  
Bohou Xia ◽  
Dong Yan ◽  
Yubing Bai ◽  
Jiachi Xie ◽  
Yi Cao ◽  
...  
Keyword(s):  
Natural Products ◽  
Phenolic Acids ◽  
Extraction Method ◽  
Deep Eutectic Solvents ◽  
Prunella Vulgaris ◽  
Green Extraction

The extraction of natural products with available green and safe solvents is rather limited.

A green extraction method for gelatin and its molecular mechanism

2021 ◽  
pp. 107344
Author(s):  
Xin Feng ◽  
Tingwei Liu ◽  
Liang Ma ◽  
Hongjie Dai ◽  
Yu Fu ◽  
...  
Keyword(s):  
Molecular Mechanism ◽  
Extraction Method ◽  
Green Extraction

scholarly journals A green extraction design for enhancing flavonoid compounds from Ixora javanica flowers using a deep eutectic solvent

2020 ◽  
Vol 7 (10) ◽  
pp. 201116
Author(s):  
Nina Dewi Oktaviyanti ◽  
Kartini Kartini ◽  
Mochammad Arbi Hadiyat ◽  
Ellen Rachmawati ◽  
Andre Chandra Wijaya ◽  
...  
Keyword(s):  
Extraction Method ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Extraction Process ◽  
Raw Material ◽  
Molar Ratio ◽  
Flavonoid Compound ◽  
Total Flavonoids ◽  
Green Extraction ◽  
Optimum Extraction

In this study, an environmentally friendly extraction method for flavonoid compound from Ixora javanica , as a new raw material candidate for herbal medicine and cosmetics, was developed. The objectives of the present work were to provide recommendations for the optimal extraction conditions and to investigate the effects of any extraction parameters on flavonoid yields from the I. javanica flower. The extraction process was performed using deep eutectic solvent (DES) (choline chloride and propylene glycol at molar ratio of 1 : 1) and the ultrasound-assisted extraction method. Both single-factor and response surface analyses using three-level and three-factor Box Behnken designs were conducted to obtain the optimum flavonoid concentrations. The results showed that the optimum extraction conditions for total flavonoids featured an extraction time of 40 min, 25% water content in DES and a solid-to-liquid ratio of 1 : 25 g ml −1 . An extract obtained under optimum extraction conditions showed higher total flavonoid yields than an ethanolic extract which was used for comparison. Scanning electron microscope images demonstrated that both of the solvents also showed different effects on the outer surface of the I. javanica flower during the extraction process. In summary, our work succeeded in determining the optimum conditions for total flavonoids in the I. javanica flower using a green extraction method.

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