نتایج جستجو برای: modified ultrasound assisted solvent extraction musae
تعداد نتایج: 681577 فیلتر نتایج به سال:
This work aimed to investigate the optimum conditions of pressure, temperature, ultrasound intensity, solvent concentration and flowrate ultrasound-assisted pressurized liquid extraction anthocyanins from Aronia melanocarpa pomace. The novel setup operates with an aqueous solution citric acid as solvent. optimization was performed in order maximize total content extracted optimized 70 °C, 180 b...
We represent an environmentally friendly sample of pre-treatment method, ultrasound assisted emulsification microextraction (USAEME) followed by gas chromatography nitrogen phosphorous detector (GC-NPD), to specify atrazine residues in environmental samples. Some parameters affecting the extraction efficiency such as the type and volume of the extraction solvent, emulsification time and additio...
Oleanolic acid and ursolic acid are the main bioactive compounds in fruit of Ligustrum lucidum Ait, which possess anti-inflammatory, antioxidative, antiprotozoal, antimutagenic and anticancer properties. In this study, the ultrasound-assisted extraction of oleanolic acid and ursolic acid from L. lucidum Ait was investigated with HPLC-photodiode array detection. Effects of several experimental p...
Currently, there is a growing interest in the study of natural products, especially as part of drug discovery programs. Secondary metabolites can be extracted from a variety of natural sources, including plants, microbes, marine animals, insects, and amphibia. This chapter focuses principally on laboratory-scale processes of initial and bulk extraction of natural products from plant and microbi...
The goal of this study was to investigate the most suitable kinetic models for pectin extraction by way of ultrasound-assisted extraction (UAE) and conventional heating extraction (CHE) with acid from melon peel. The ultrasound and acidic assisted extraction were performed on powdered melon peel in three different temperatures of 40-55-70°C and 50-70-90°C, respectively. It was observed that, in...
In this study, amount of morphine from poppy capsules (Papaver somniferum) was investigated using ultrasonic assisted extraction (UAE). Response surface methodology was used to estimate effective experimental conditions on the content extraction of poppy capsules. For this purpose, solvent/solid ratio (10-20 mL/500 mg sample), pH (1-13), time (30-60 min), and temperature (30-50°C) were chosen a...
Background & Aim: Sesame is one of the oldest cultivated plants in the world and is one of the oldest oily products used by humans. Sesame oil is an important industrial, oral and medicinal oil. Today, the use of ultrasound has grown significantly due to its effects on food storage and processing. Experimental: In this research, the response level model w...
The ultrasound-assisted extraction (UAE) method was used to optimize the extraction of phenolic compounds from pumpkins and peaches. The response surface methodology (RSM) was used to study the effects of three independent variables each with three treatments. They included extraction temperatures (30, 40 and 50°C), ultrasonic power levels (30, 50 and 70%) and extraction times (10, 20 and 30 mi...
A complete chemical characterization of Moringa oleifera leaves was carried out showing a high content extractives. Extraction kinetics bioactive compounds present in this fraction were performed by conventional and ultrasound assisted extraction (UAE). 50% (v/v) hydroalcoholic mixture led to the highest total phenolic yield solvent extraction, 29.5 ± 0.3 mg per gram moringa leaves. UAE did not...
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