*Corresponding author e-mail: [email protected] A b s t r a c t. The aim of the present study was to reveal an effective extraction procedure for maximization of the yield of steviol glycosides and total phenolic compounds as well as antioxidant activity in stevia extracts. Ultrasound assisted extraction was compared with conventional solvent extraction. The examined solvents were water (100oC/24 ...

Sea buckthorn (Hippophae rhamnoides L.) is an important plant with homology of medicine and food. It has rich nutritional medicinal properties. used as a traditional Chinese therapeutic functions invigorating spleen, relieving cough, eliminating food, phlegm, dispersing blood stasis, promoting circulation. This review comprehensively summarized flavonoids from sea L.), including extraction meth...

Several investigations have proven the presence of anthocyanins in different parts açai plants. These compounds are responsible for notable therapeutic properties such as antioxidant, antimicrobial, anti-inflammatory, anticancer, and anticonvulsant. We therefore optimized an enzyme-assisted extraction method found açai, to be subsequently applied many fields agrifood, medicine, or cosmetics. A ...

Coconut pericarp ( shell fiber mesocarp ) and endocarp )), the main by-product of coconut production, is often discarded causing serious environmental pollution. To make better use pericarp, extraction process polyphenols from (CM) carefully studied by screening seven solvent systems, optimizing assisted ultrasonic response surface methodology, comparing four Ultrasound, Homogenization, Ultraso...

A novel dispersive liquid-liquid microextraction (DLLME) method followed by HPLC analysis, termed sequential DLLME, was developed for the preconcentration and determination of aryloxyphenoxy-propionate herbicides (i.e. haloxyfop-R-methyl, cyhalofop-butyl, fenoxaprop-P-ethyl, and fluazifop-P-butyl) in aqueous samples. The method is based on the combination of ultrasound-assisted DLLME with in si...

The analytical use of ultrasound-generated emulsations has recently found a growing interest to improve efficiency in liquid-liquid microextraction since they increase the mass transfer between the two immiscible phases implied and leads to emulsification. Thus, dispersed droplets can act as efficient liquid-liquid microextraction in continuous phase, and later they can be readily separated by ...

A reliable and simple procedure to extract polychlorinated biphenyls (PCBs) from marine mussels using microwave energy is proposed. Freeze-dried mussels were subjected to MASE (Microwave Assisted Solvent Extraction) in a closed-vessel microwave system with n-pentane-sodium hydroxide (5 %) or dichloromethane-pentane (1:1) at different temperatures (70 and 90 oC), the extraction time was 10 minut...

Agriculture and food industries generate substantial quantities of waste material with a huge potential for bioactive ingredients to be recovered converted into high-value chemicals. Red beetroot, known its high content in betalains, natural red pigments, as well polyphenols, fiber, nitrate, is experiencing increasing demand, particular juice, which leaving behind large amounts waste. The prese...

An efficient cold-mechanical/sonic-assisted extraction technique was developed for extraction of genipin from genipap (Genipa americana) peel. Ultrasound assisted extraction (285 W, 24 kHz) was performed at 5, 10 and 15 °C for 5, 10 and 15 min. After cold-extraction, genipin was separated from pectin and proteins by aid of fungal pectinesterase. The maximum yield of non-cross-linked genipin was...