نتایج جستجو برای: ethyl maltol

تعداد نتایج: 34589  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده شیمی 1392

حفاظت از گروههای عاملی از مراحل اجتناب ناپذیر در سنتز آلی است، در این بین محافظت از گروههای آمینی بسیار حائز اهمیت است. روشهای متعددی از قبیل فرمیله کردن، استیله کردن، محافظت بصورت boc و موارد زیاد دیگری جهت محافظت از گروههای آمینی تاکنون گزارش شده است. از طرف دیگر توسعه و کاربرد کاتالیست ها و حلالهای دوستدار محیط زیست و مزایای واکنشهای بدون حلال همچون سرعت بالای واکنش، خالص سازی آسان، کاهش آلو...

2016
Ni Yang Chujiao Liu Xingkun Liu Tina Kreuzfeldt Degn Morten Munchow Ian Fisk

Coffee beans from the same origin were roasted using six time-temperature profiles, in order to identify volatile aroma compounds associated with five common roast coffee defects (light, scorched, dark, baked and underdeveloped). Thirty-seven volatile aroma compounds were selected on the basis that they had previously been identified as potent odorants of coffee and were also identified in all ...

2017
Janice Gerloff Isaac K. Sundar Robert Freter Emily R. Sekera Alan E. Friedman Risa Robinson Todd Pagano Irfan Rahman

Recent studies suggest that electronic cigarette (e-cig) flavors can be harmful to lung tissue by imposing oxidative stress and inflammatory responses. The potential inflammatory response by lung epithelial cells and fibroblasts exposed to e-cig flavoring chemicals in addition to other risk-anticipated flavor enhancers inhaled by e-cig users is not known. The goal of this study was to evaluate ...

Journal: :European Food Research and Technology 2021

Abstract An odorant screening by gas chromatography–olfactometry (GC–O) and a crude aroma extract dilution analysis (AEDA) applied to the volatiles isolated from light dark liquid malt (LME) solvent extraction solvent-assisted flavour evaporation (SAFE) identified 28 odorants. Fifteen major odorants were subsequently quantitated odour activity values (OAVs) calculated as ratio of concentration ...

Journal: :Horticulturae 2022

The Niamhom (Strobilanthes nivea Craib) plant was cultivated using a modern greenhouse with an automatic irrigation system controlled by the Internet of Things (IoT). present study investigates effects fertilizers, including chemicals, cow manure fertilizer, and bio-fermented water shading influences 50 70% on growth morphological characteristics. Additionally, aims to analyze chemical constitu...

2015
D. Lee K. Ghafoor S. Moon S. H. Kim S. Kim H. Chun

High hydrostatic pressure (HHP) is an attractive method for food preservation due to resulting improvements in the quality characteristics of foods, in addition to microbial inactivation. This study aimed at improving the nutraceutical potential of red ginseng (Panax ginseng C.A. Meyer). HHP treatment of 600 MPa for 1 min at room temperature in conjunction with conventional steaming and drying ...

Journal: :Cosmetics 2021

Maltol, mostly used as a flavoring molecule, also has various potential applications biomedical compound. Despite its extensive use in the food industry, maltol’s antimicrobial activity was evaluated only briefly, and suggested to be insufficient on own. Recently, we have shown that maltol can conjunction with cationic surfactant species receive higher against contaminant microorganisms. In thi...

Journal: :Chemistry 2009
Wolfgang Kandioller Christian G Hartinger Alexey A Nazarov Caroline Bartel Matthias Skocic Michael A Jakupec Vladimir B Arion Bernhard K Keppler

Organometallic ruthenium-arene compounds bearing a maltol ligand have been shown to be nearly inactive in in vitro anticancer assays, presumably due to the formation of dimeric Ru(II) species in aqueous solutions. In an attempt to stabilize such complexes, [Ru(eta(6)-p-cymene)(XY)Cl] (XY=pyrones or thiopyrones) complexes with different substitution pattern of the (thio)pyrone ligands have been ...

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