Results 91 to 100 of about 10,737,178 (203)

Advances in Eco‐Friendly Extraction of Fruit Bioactive Compounds: Technologies, Challenges and Future Directions

open access: yesAnalytical Science Advances, Volume 7, Issue 1, June 2026.
Fruit bioactive compounds offer antioxidant, anti‐inflammatory, and preventive benefits, yet extraction is hindered by poor solubility and conventional methods using toxic solvents and high energy. This review evaluates traditional and advanced eco‐friendly technologies, highlighting efficiency, selectivity, and sustainability.
Abadi Gebreyesus Hndeya   +2 more
wiley   +1 more source

Use of headspace solid-phase microextraction for the analysis and characterisation of volatile compounds in rumen contents : a thesis presented in partial fulfillment of the requirements for the degree of Masterate of Science in Chemistry at Massey University [PDF]

open access: yes, 2005
Appendix 2&3 removed due to copyright restrictions. Please consult print copy in Library.Volatile fatty acids (VFAs), alkyl phenols and indolic compounds are produced by rumen microbes during the fermentation of forages in ruminants.
Lu, Shengyi
core  

Analytical Green Star Area for Sample Preparation (AGSA‐Prep) as a Comprehensive and Practice‐Oriented Metric

open access: yesAnalytical Science Advances, Volume 7, Issue 1, June 2026.
ABSTRACT Sample preparation is a critical, yet often environmentally burdensome, step in analytical chemistry. While Green Sample Preparation principles aim to mitigate this impact, existing assessment tools such as AGREEprep offer room for improvement in the assessment process.
Fotouh R. Mansour   +3 more
wiley   +1 more source

Recent Microextraction Techniques for Determination and Chemical Speciation of Selenium

open access: yesOpen Chemistry, 2017
Research designed to improve extraction has led to the development of microextraction techniques (ME), which involve simple, low cost, and effective preconcentrationof analytes in various matrices.
Ibrahim Ahmed S. A.   +3 more
doaj   +1 more source

Recent Advances in the Extraction of Polycyclic Aromatic Hydrocarbons from Environmental Samples

open access: yesMolecules, 2020
Polycyclic aromatic hydrocarbons (PAHs) comprise a group of chemical compounds consisting of two or more fused benzene rings. PAHs exhibit hydrophobicity and low water solubility, while some of their members are toxic substances resistant to degradation.
Natalia Manousi, George A. Zachariadis
doaj   +1 more source

Therapeutic Drug Monitoring and Methods of Quantitation for Carbamazepine [PDF]

open access: yes, 2017
Carbamazepine is an early anticonvulsant still used today in the treatment of several forms of epilepsy. An active metabolite in the human body contributes to its pharmacological effect.
Ana Vlasceanu   +7 more
core   +4 more sources

Integrative Metabolomic and Transcriptomic Profiling Reveals the Chemical and Molecular Basis for Aroma Divergence in Isatis Fruits

open access: yesFood Frontiers, Volume 7, Issue 3, May 2026.
Integrative metabolomic and transcriptomic analyses revealed the chemical and molecular basis of aroma divergence in fruits of three Isatis species. Distinct volatile profiles and 44 key aroma‐active compounds defined species‐specific sensory characteristics, while co‐expression analysis identified NAC transcription factors and lipid‐derived pathway ...
Rong Chen   +10 more
wiley   +1 more source

Determination of pesticides in fruit and fruit juices by chromatographic methods. An overview [PDF]

open access: yes, 2011
In order to combat a variety of pests, pesticides are widely used in fruits. Several extraction procedures (liquid extraction, single drop microextraction, microwave-assisted extraction, pressurized liquid extraction, supercritical fluid extraction ...
Delerue-Matos, Cristina   +3 more
core   +1 more source

Advances in Wine Yeast Autolysis: Biochemical and Molecular Mechanisms, and the Release of Organic Compounds in White and Sparkling Wines—An Updated Review

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 25, Issue 3, May 2026.
ABSTRACT Wine yeasts play a central role in alcoholic fermentation and significantly contribute to the sensory attributes of wines through cellular autolysis during lees aging (sur lie), especially in white wines. This process releases organic compounds that alter the wine's chemical and sensory profile.
José Ricardo Machado dos Santos   +1 more
wiley   +1 more source

Principais técnicas de preparo de amostra para a determinação de resíduos de agrotóxicos em água por cromatografia líquida com detecção por arranjo de diodos e por espectrometria de massas

open access: yesQuímica Nova, 2011
The determination of pesticide residues in water samples by Liquid Chromatography require sample preparation for extraction and enrichment of the analytes with the minimization of interferences to achieve adequate detection limits.
Sergiane Souza Caldas   +5 more
doaj   +1 more source

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