Results 81 to 90 of about 56,272 (220)

Natural‐based antioxidants in cosmeceuticals: Extraction, bioavailability and skin ageing applications

International Journal of Cosmetic Science, EarlyView.
Natural antioxidants from plants, fruits, seeds and fungi combat ageing by neutralizing free radicals, boosting collagen and protecting against UV damage. Enhanced by green extraction and smart delivery systems, they offer powerful anti‐inflammatory and antimicrobial benefits.
Hossein Omidian, Arnavaz Akhzarmehr, Charise Dallazem Bertol   +2 more
wiley   +1 more source

Vacuum-assisted headspace-solid phase microextraction of pesticides in grape samples

Advances in Sample Preparation
Vacuum-assisted headspace solid-phase microextraction (Vac-HS-SPME) could provide an alternative for extracting pesticides from grape samples. Vac-HS-SPME method is utilized to the simultaneous analysis of six pesticides from various classes, namely ...
Yerkanat Syrgabek, Mereke Alimzhanova, Saltanat Yegemova, Svetlana Batyrbekova   +3 more
doaj   +1 more source

Stir Bar Sorptive Extraction - New Approach for the Determination of Some Beer Flavours.

Kvasný průmysl, 2008
For the determination of beer flavours well-established methods require sample preparation steps such as liquid/liquid extraction, solid phase extraction or distillation techniques. During the past years the microextraction procedures become popular e. g.
Tomáš HORÁK, Jiří ČULÍK, Marie JURKOVÁ, Pavel ČEJKA, Vladimír KELLNER   +4 more
doaj   +1 more source

Investigation on the volatiles and aromatic characteristic of Raw Pu-erh tea with different storage durations by headspace solid-phase microextraction combined with gas chromatography-mass spectrometry and odor activity value analysis [PDF]

, 2023
Jie Guo, Zhihao Yu, Meiyan Liu, Mengdi Guan, Aiyun Shi, Yongdan Hu, Siyu Li, Dabing Ren, Lunzhao Yi   +8 more
openalex   +1 more source

Metabolomic and Single‐Cell Transcriptomic Analyses Shed Light on Secondary Metabolite Profiling and Potential Developmental Dynamics of Glandular Trichomes in Artemisia argyi

Plant Biotechnology Journal, EarlyView.
ABSTRACT Plant glandular trichomes (GTs) are characterised by their ability to synthesise and store abundant secondary metabolites of significant biological importance. The medicinal plant Artemisia argyi exhibits a dense covering of GTs, yet the precise metabolic compositions and the developmental molecular dynamics of A.
Shuting Dong, Hongyu Chen, Sijie Sun, Miaoxian Guo, Chao Sun, Shilin Chen, Hongmei Luo   +6 more
wiley   +1 more source

Determination of Ochratoxin A in Wheat and Maize by Solid Bar Microextraction with Liquid Chromatography and Fluorescence Detection

Toxins, 2015
Solid bar microextraction (SBME), followed by liquid chromatography with fluorescence detection (HPLC-FLD), for the quantification of ochratoxin A in wheat and maize was developed.
Nabil Al-Hadithi, Philip Kössler, Petr Karlovsky   +2 more
doaj   +1 more source

Air Pollution in the Valparaiso Area [PDF]

, 2020
Volatile Organic Compounds (VOC’s) and particulate matter (PM) have been serious air pollution concerns around the world, particularly where industries and high volume traffic is present. These pollutants have been shown to have a negative effect on most
Burns, Meghanne, Junglas, Seth, King, Jack, Kohlmeyer, Kyle, McIntosh, Jessica, Peller, Julie, Tope, Jayden, Tran, Linh   +7 more
core   +1 more source

The Diversity of the DNA‐Binding Landscape in the DREB/ERF Family: Focusing on Reproductive Processes in Fruit Trees With Highly Heterozygous Genome

Plant Biotechnology Journal, EarlyView.
ABSTRACT DREB/ERF transcription factors play pivotal roles in plant development; however, their structural characteristics, DNA‐binding preferences, and functional roles in highly heterozygous woody plants remain insufficiently understood. Using lychee (Litchi chinensis) as a model, we identified 95 DREB/ERF genes subdivided into ten phylogenetic ...
Fengqi Wu, Jiakun Zheng, Huimin Hu, Hongsen Liu, Yaxuan Xiao, Junting Feng, Yanwei Hao, Chengjie Chen, Rui Xia, Zaohai Zeng   +9 more
wiley   +1 more source

Microextraction Techniques Coupled to Liquid Chromatography with Mass Spectrometry for the Determination of Organic Micropollutants in Environmental Water Samples

Molecules, 2014
Until recently, sample preparation was carried out using traditional techniques, such as liquid–liquid extraction (LLE), that use large volumes of organic solvents.
Mª Esther Torres Padrón, Cristina Afonso-Olivares, Zoraida Sosa-Ferrera, José Juan Santana-Rodríguez   +3 more
doaj   +1 more source

Determination of total and available fractions of PAHs by SPME in oily wastewaters : overcoming interference from NAPL and NOM [PDF]

, 2009
Background, aim, and scope Polycyclic aromatic hydrocarbons (PAHs) are often found in oily wastewaters. Their presence is usually the result of human activities and has a negative effect on the environment.
AJ King, AJ King, António G. Brito, CL Arthur, CL Arthur, CR Maxin, DW Potter, EU Ramos, F Busetti, G Ouyang, G Ouyang, H Wong, J Ai, J Poerschmann, J Poerschmann, J Rumble, JD Hamme Van, JD Kubicki, José M. Oliveira, João Peixoto, KD Jones, M Al Zarooni, M Brigante, MA Schlautman, P Mayer, P-H Lee, R Doong, R Doong, Regina Nogueira, RJ Bartelt, Rui B. Gomes, S Lesage, S Shokrollahzadeh, SK Samanta, T Gorecki, T Kose, T Luan, W Zhu, WHJ Vaes, Z Zhang, Z Zhang, Z Zhang   +41 more
core   +1 more source