SciELO

Process optimization of deep eutectic solvent-based microwave-assisted extraction of flavonoids from Ziziphi Spinosae Semen using response surface methodology

Total flavonoids were extracted from Ziziphi Spinosae Semen (ZSS) by applying microwave-assisted extraction with low eutectic solvent (DES) as the extractant. This study investigated the effect of 21 ...
IEEE

Sensitive and Rapid Extraction-Free Detection of Furfural in Mineral and Natural Ester Oils by 4-ATP Modified SERS Substrate

Abstract: Furfural serves as a significant indicator of the aging process of oil-paper insulated transformer. However, the commonly used liquid chromatography (LC) method is cumbersome, time-consuming ...
SciELO

Effect of solvent polarity on extraction yield and antioxidant properties of phytochemicals from bean (Phaseolus vulgaris) seeds

The effect of solvent polarity on extraction yield and antioxidant properties of phytochemical compounds in bean seeds was studied. Seed flour of three varieties of bean was extracted in a series of ...
IEEE

Observer-based estimation for an essential oil extraction system

Abstract: This study involved the design and simulation of a nonlinear observer to estimate the internal variables of hydrodistillation that cannot be measured directly, such as the mass of oil ...