Dry-grind technology has become the dominant method for ethanol production. During drygrind ethanol production, roughly one-third of the dry grain mass resides in the dried distillers grains with solubles (DDGS) as by-products (i.e., ∼0.8 kg/L ethanol). The energy content residing in the 0.8 kg DDGS is about 20 MJ, compared to the consumption of 1 MJ electricity and 10 MJ thermal energy for pro...

The work described here is based on a comparative study of carotenoids and fatty acids extracted from Synechococcus sp. with 1) pure supercritical CO2; 2) CO2 with 5% (v/v) ethanol as cosolvent; and 3) ultrasound-assisted extraction using N, N-dimethylformamide (DMF). The effects of extraction conditions on supercritical CO2 extraction with and within cosolvent were analyzed at different temper...

The present study was to optimize the phenolic recovery from Centella asiatica by investigating the effects of ethanol concentration (0-100%, v/v), extraction time (60-300 min) and extraction temperature (2565°C) on phenolic extraction using single-factor experiments. Total phenolic content (TPC), total flavonoid content (TFC) and condensed tannin content (CTC) were used for determination of ph...

Background: Plants contain diverse phytochemicals with different solubility levels, depending on their molecular charges and polarity. This study was conducted to examine the effects of three extraction solvents in their pure and aqueous forms: absolute petroleum ether, acetone and ethanol on the phytochemical profile and antioxidant activities of Manihot esculenta leaves extracts. Methods: Th...

Introduction: Depression has multifactorial characters including brain-behavioral disorders, alteration in cognitive psychomotor and emotional process. Millions of people are worldwide suffering from this illness. This disease happens in all ages of men and women. This research tries to introduce a traditional medication in comparison with common chemical anti-depressant drugs. This experimen...

The ultrasound-assisted extraction of phenolic compounds from Epimedium brevicornu Maxim was modeled using response surface methodology. A Central Composite Design (CCD) was employed to optimize three extraction variables, including ethanol concentration (X 1), extraction time (X 2), and ratio of aqueous ethanol to raw material (X 3), for the achievement of high extraction yield of the phenolic...

We describe a fluorometric method for determining zinc protoporphyrin, in which whole-blood specimens collected in heparin/ethylenediaminetetraacetate are prediluted with water, and zinc protoporphyrin is extracted into ethanol/ water (95/5 by voi). The resulting extract has a low absorbance (0.05) at the excitation wavelength (415 nm) of zinc protoporphyrin, and the extraction efficiency is ab...

Optimization of extraction conditions and phytochemical screening of the root bark of Synadenium glaucescens were carried out in a stepwise manner in order to obtain the highest yields and the constituents of the extracts. Sequential extraction using Soxhlet method was performed using dichloromethane, hexane and petroleum ether, respectively, each followed by ethanol. Extraction conditions incl...

Ginseng leaf/stem extract produced by subcritical water extraction at high temperature (190°C) possess higher cytotoxic activity against human cancer cell lines than ethanol extract. Subcritical water extraction can be a great candidate for extraction of functional substance from ginseng leaves/stems.

The aim of this research was to: (1) develop a reliable extraction procedure and assay to determine antioxidant activity in meat products, and (2) assess the effect of beef finishing system (forage-finished: alfalfa, pearl millet or mixed pastures vs. concentrate-finished) on longissimus muscle antioxidant activity. The effect of extraction method (ethanol concentration and extraction time), pr...