Three chromatographic methods have been employed for the determination of hydrophilic compounds, namely carbohydrates and organic acids in herbal dry extracts of Eschscholtzia californica Cham. The hydrophilic compounds were separated from the other components of the dry extracts by solid-phase extraction methods, which were optimised with respect to recovery rates. Carbohydrates were quantified using high-performance anion-exchange chromatography with pulsed amperometric detection. Organic acids were analysed by ion-exclusion chromatography with evaporative light scattering detection and gas chromatography-mass spectrometry. Using the latter method, large amounts of glyceric acid were separated from the extracts of Eschscholtzia californica Cham. This substance together with sugars may be responsible for the increased hygroscopicity and the poor processing behaviour of the extracts.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0021-9673(02)00949-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effective pretreatment of tea stem via poly-deep eutectic solvent for promoting platform molecule production and obtaining fluorescent lignin.
Int J Biol Macromol
January 2025
College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen 361021, China; Research center of food biotechnology of Xiamen city, Xiamen, Fujian 361021, China. Electronic address:
In this study, polyethylene glycol 200 (PEG200) was employed as hydrogen bond acceptor, while organic acids served as hydrogen bond donors, to formulate poly-deep eutectic solvents (PDESs), which were utilized to pretreat tea stem. Specially, combining PEG200 and oxalic acid (OA) exhibited a notably high cellulose retention (82.03 %) and most efficient hemicellulose (97.
View Article and Find Full Text PDFPolybutylene succinate/lignin composites with tunable optical, mechanical, and thermal properties based on fractionation treatment.
Int J Biol Macromol
January 2025
Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA.
The inherent heterogeneity, poor compatibility with polymers, and dark color of lignin limit its application in composites. In this study, original lignin (OL) was fractionated sequentially using four green organic solvents to obtain lignin fractions with different chemical structures. These well-defined lignin fractions were then blended with polybutylene succinate (PBS) to fabricate biocomposites.
View Article and Find Full Text PDFKill two birds with one stone: Biochar immobilised polydopamine coated compound bacterial agent for remediation of dibutyl phthalate contaminated soil.
Environ Res
January 2025
School of Resources and Environment, Northeast Agricultural University, Harbin 150030, PR China. Electronic address:
The severe contamination of the plasticiser dibutyl phthalate (DBP) in agriculture soils is often accompanied by a decrease in nutrient utilisation. Though the combined application of a variety of microorganisms can simultaneously address the problems of soil contamination and nutrient deprivation, the activity and function of microorganisms can be severely inhibited by DBP, and studies on their protection under DBP contamination are almost non-existent. In this study, a compound bacterial agent KPSB was prepared by optimising with FeO-modified biochar loaded with DBP-degrading bacterium Enterobacterium sp.
View Article and Find Full Text PDFAcidification level variability in hemiboreal production forest drained peatland catchments and after different intensity regeneration fellings using critical loads modelling approach.
J Environ Manage
January 2025
University of Latvia, The Faculty of Science and Technology, Jelgava Street 1, LV-1004 Riga, Latvia.
Forestry activities, i.e., drainage system maintenance or regeneration fellings may alter the water quality in catchments as well as in runoff and induce risks of acidification.
View Article and Find Full Text PDFMicrobial safety of black soldier fly larvae (Hermetia illucens) reared on food waste streams.
Waste Manag
January 2025
Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, Queensland 4072, Australia; School of Agriculture and Food Sustainability, Faculty of Science, University of Queensland, Brisbane, Queensland 4072, Australia.
Black soldier fly larvae (BSFL) can valorise different organic matter and yield a product of high nutritional value. The lack of knowledge about the microbial safety of BSFL grown on different organic waste streams influences the commercialisation of BSFL as stockfeed ingredient. This study evaluates the microbial safety of BSFL grown on five different commercial food waste streams collected from two commercial production facilities.
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!