Previously we were able to isolate by simple and mild methods from an aqueous sheep pineal extract an inhibiting principle action on the anterior hypophysis of male rats in vitro. This substance could be located by paper electrophoresis. In the present paper we describe the further purification of this active principle by paper chromatography in two different solvents. In two regions possessing a special fluorescence an inhibiting factor of the gonadotropic activity of the anterior pituitary was found in vitro.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF01249441 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Characterization of saffron from different origins by HS-GC-IMS and authenticity identification combined with deep learning.
Food Chem X
December 2024
School of Pharmacy, Naval Medical University, Shanghai 200433, China.
With the rising demand of saffron, it is essential to standardize the confirmation of its origin and identify any adulteration to maintain a good quality led market product. However, a rapid and reliable strategy for identifying the adulteration saffron is still lacks. Herein, a combination of headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) and convolutional neural network (CNN) was developed.
View Article and Find Full Text PDFUnveiling the chemical composition of unique flavor profiles in raw Pu-erh tea from different Tea-Producing Mountains.
Food Chem X
December 2024
Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
The Chinese proverb "One mountain, one flavor" reflects that raw pu-erh tea (RPT) from different tea-producing mountains (TPMs) possesses distinct flavor profiles. However, limited research has been conducted on the chemical composition underlying distinct flavor profiles. In this study, sensory evaluation and main phytochemical compositions revealed diverse aromas of RPTs from 26 TPMs.
View Article and Find Full Text PDFComparative analysis of key aroma compounds in air-frying roasted pork from five species.
Food Chem X
December 2024
School of Agriculture and Food Science, University College Dublin, Dublin 4, Ireland.
The popularity of roasted pork among Chinese consumers is largely attributed to its rich aroma profile. However, the suitability of different pork species for roasting remains uncertain. In this study, the effect of various pork species on the aroma profiles of roasted pork was systematically investigated using gas chromatography-olfactometry-mass spectrometry (GC-O-MS).
View Article and Find Full Text PDFInter- and intra-varietal clonal differences influence the aroma compound profiles of wines analyzed by GC-MS and GC-IMS.
Food Chem X
January 2025
College of Enology, Northwest A & F University, No. 22 Xinong Road, Yangling 712100, China.
To investigate the impact of genetic factors on wine aroma, wines made from 22 clones of five grape varieties ( L.) were used to analyze the volatile compounds by headspace solid phase microextraction gas chromatography mass spectrometer (HS-SPME-GC-MS) and headspace gas chromatography-ion mobility spectrometry (HS-GC-IMS). Results showed that 52 and 49 aroma compounds were identified from 22 clones of wines by two technologies, respectively.
View Article and Find Full Text PDFMetabolomics-based study on the effect of low-voltage electrostatic field treatment on the storage quality of postharvest square bamboo shoots.
Food Chem X
January 2025
School of Food Science and Bioengineering, Tianjin Agricultural College, Tianjin 300384, China.
Low-voltage electrostatic field (LP) enhances the freezing quality of food by increasing water supercooling and improving ice crystal morphology. This study explored the effects of LP treatment on the storage quality of square bamboo shoots using physicochemical, gas chromatography-mass spectrometry, and metabolomics methods. Results showed that with prolonged storage, the LP-treated group had lower activities of peroxidase, phenylalanine ammonia-lyase, and lower levels of malondialdehyde, cellulose, and lignin compared to the control group, while superoxide dismutase and catalase activities and shear force values were higher.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!