[Establishing quantitative model of naringin in citrus Grandis Exocarpium by near infrared spectroscopy].

Objective: To establish the quantitative model of naringin in Citrus Grandis Exocarpium by near infrared reflectance spectroscopy(NIRS).

Methods: NIRSs of 54 Citrus Grandis Exocarpium samples were collected and pretreated by TQ Analyst 8.0 software with first derivative + Norris filter.

Piperine potentiates the hypocholesterolemic effect of curcumin in rats fed on a high fat diet.

It has previously been demonstrated that curcumin possesses a hypocholesterolemic effect and potentiates numerous pharmacological effects of curcumin, however, the mechanisms underlying this hypocholesterolemic effect and the interaction between curcumin and piperine remain to be elucidated. In the present study, male Sprague-Dawley rats were fed on a high-fat diet (HFD) to establish a hyperlipidemia (HLP) model. Co-administration of curcumin plus piperine was found to decrease the levels of total cholesterol (TC), triglyceride (TG) and low-density lipoprotein cholesterol in the serum and liver, as well as increase the levels of fecal TC, TG and total bile acid, compared with administration of curcumin alone.

[Application of near-infrared spectroscopy technology in quality control of TCM manufacturing process].

With the development of research in near-infrared spectroscopy technology, near-infrared spectroscopy are increasingly employed in quality control of traditional Chinese medicine (TCM) manufacturing process. The recent researches in relative field were summarized in this paper. Perspective of near-infrared spectroscopy technology in quality control of TCM manufacturing process was also presented in this paper.

[Study on quality control of herbal material of paeony formula granule by near infrared diffuse reflection spectroscopy].

Objective: To develop a novel method to determine fastly and nondestructively the content of paeoniflorin, albiflorin and moisture in Radix Paeoniae Alba with near infrared diffuse reflection spectroscopy.

Method: Multivariate calibration models based on PLS algorithm were developed to correlate the spectra and the corresponding values determined by the reference method.

Result: The corelation coefficients (R2) of the calibration models were 0.

Quality evaluation of commercial extracts of Scutellaria baicalensis.

Botanical products have been widely used for various illnesses and general well-being. However, quality control of botanical products is often not performed due to lack of standardization, resulting in inconsistent efficacies and sometimes serious toxicity. The goals of this study were to determine the correlation between chemical composition and biological activities and to establish a method to measure authenticity, chemical consistency, and biological potency of botanical products.