نتایج جستجو برای: hydroxymethyl furfural hmf

تعداد نتایج: 5929  

2015
Min Xu Shi-Long Yang Wei Peng Yu-Jie Liu Da-Shuai Xie Xin-Yi Li Chun-Jie Wu

Areca nut, commonly known locally as Semen Arecae (SA) in China, has been used as an important Chinese herbal medicine for thousands of years. The raw SA (RAW) is commonly processed by stir-baking to yellow (SBY), stir-baking to dark brown (SBD), and stir-baking to carbon dark (SBC) for different clinical uses. In our present investigation, intelligent sensory technologies consisting of compute...

2012
Congcong Chi Zhijian Li Hasan Jameel

A simple and rapid dual-wavelength spectroscopic method is used for simultaneous determination of pentoses and hexoses in the prehydrolyzate from lignocellulosic biomass. The method is based on the following reaction mechanism: in the solution of hydrochloric acid, phloroglucinol gives color reaction with sugars or their degradation products, showing maximum absorbance at 553 nm and 410 nm. Bas...

Journal: :Bioresource technology 2009
J Y Zhu X J Pan G S Wang R Gleisner

This study established a novel process using sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL) for robust and efficient bioconversion of softwoods. The process consists of sulfite treatment of wood chips under acidic conditions followed by mechanical size reduction using disk refining. The results indicated that after the SPORL pretreatment of spruce chips with 8-10% bisu...

2013
C. Ghanshyam

The effect of nonthermal pulsed electric field (PEF) and thermal treatment (900C for 60s) was studied on quality parameters of Emblica officinalis juice for the period of 6 weeks at 40C using monopolar rectangular pulse of 1μs width. The PEF treatment was given using static chamber at 24kV/cm for 500μs. The quality of Emblica officinalis juice was investigated in terms of non enzymatic browning...

Baochang Cai Gang Cao, Hao Cai Jian Feng Xiaodong Cong Yun Zhang

      The purpose of this study was to develop a sensitive and fast microdialysis coupled with high-performance liquid chromatographic (HPLC) method for determination of 5-hydroxymethyl-2-furaldehyde (5-HMF) in free-moving rats after i.g. administration of the aqueous extract of crud Fructus corni and its processed products of jiuzheng pin (JZP). The concentration of 5-HMF in free-movi...

Journal: :Applied sciences 2022

The ingredients and the preparation methods influence biscuit quality safety. In Iraq, imports are increasing every year, but no information is available in scientific literature on their safety features. This work analyzed three types of biscuits (cookies, crackers, digestives) sampled Basrah markets (Iraq) produced Spain, Iran, Turkey, United Arab Emirates. Nine different brands were consider...

Journal: :Chemcatchem 2022

Abstract Furan‐2,5‐dimethylcarboxylate (FDMC), along with ethylene glycol (EG), is the key monomer to produce (poly‐(ethylene‐furanoate) (PEF). Noble metal‐based catalysts can convert hydroxymethyl furfural (HMF) FDMC in methanol through liquid phase catalytic oxidative esterification. In this work, performance of Au, Pd and AuPd NPs supported on nanosized nickel oxide (nNiO) have been evaluate...

1997
J. Quesada Granados M. Villalón

Appropriate statistical techniques were used to study the influence of different aging conditions on the furanic aldehyde contents of a number of brandies. Some of these conditions (presence or absence of caramel, wood type, state of the barrel, length of maturation) affected the concentrations of furfural and 5-(hydroxymethyl)furfural in the distillate, and these compounds cannot therefore be ...

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