نتایج جستجو برای: extraction ratio

تعداد نتایج: 659058  

Akram Arianfar Maryam Sardarodiyan, Masoomeh Mehraban Sang Atash

Restrictions on the use of synthetic antioxidant such as butylated  hydroxyanisole  (BHA) and butylated  hydroxytoluene (BHT) are being imposed  because of  their carcinogecity. In this investigation  optimization  of phenolic extraction  process  frome  methanolic (80%)  extract (v/v) of  elaegnus  angustifolia  through  Response  Surface Methodology  by fulin cio- calteu is  performrd  for op...

2006
Hossein Marvi

A discriminative feature extraction based on Principal component analysis (PCA) and Gaussian mixture models is presented to increase the discrimative capability of modified two dimentional root cepstrum analysis (MTDRC). The exprimental results show that F-ratio tests indicate better separability of phonemes by using discriminative feature extraction than MTDRC. Key–Words: Feature extraction,PC...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
arash koocheki abdollah hematian sourki mohammad elahi seyed mohammad ali razavi

introduction: β-glucan is the most important water soluble fiber found in cell wall of some cereals such as barley, oat, wheat and rye, that are composed of β-d-glucoseunits with (1→4) (70%) and (1→3) (30%)anomericbonds(benito-román, alonso, & cocero, 2013).β-glucan is regarded as a dietary fiber in functional foods. it can act as a hydrocolloid due to its thickening characteristic in aqueous p...

2009
A. Keshav K. L. Wasewar

In present paper, the recovery of propionic acid from aqueous phase by reactive extraction was studied using tri-n-butyl phosphate (TBP) in petroleum ether. Extraction using pure diluent was found to be poor. Using the mixture of extractant-diluent the extraction was significantly improved. Results were presented in terms of distribution coefficient, equilibrium complexation constant, loading r...

Journal: :Acta cirurgica brasileira 2014
Radamés Bezerra Melo Sérgio Botelho Guimarães Paulo Goberlânio de Barros Silva Reinaldo Barreto Oriá José Ulisses de Souza Melo Paulo Roberto Leitão Vasconcelos

PURPOSE To evaluate the antioxidant and antiperoxidative effects of oil mixes of high ratio Omega-9:Omega-6 and low ratio Omega-6:Omega-3 in the third day after tooth extraction in rats. METHODS Thirty-two male Wistar rats (270-310 g) were randomly distributed in two groups: Control (n=24) and Test (n=8). Control group was divided into three subgroups (n=8): G1: Sham-Saline; G2: Saline; G3: I...

Journal: :International Journal of Mining, Reclamation and Environment 2021

Variations in rock fragmentation are very likely to occur a sublevel-caving operation. This study conducted comprehensive test an iron ore mine monitor fragmentation. The results show clear trend variations from start end of production ring. These suggest increase coarse and oversized fragments with increasing material extraction the rings that can be linked increased overburden drill hole devi...

2016
Dong-Ping Xu Jie Zheng Yue Zhou Ya Li Sha Li Hua-Bin Li

The Thelephora ganbajun mushroom has been found to be a potential rich source of natural antioxidants. In this study, an ultrasound-assisted extraction (UAE) technique together with GRAS (generally recognized as safe) solvents (ethanol and water) was used to maximize the extraction of antioxidants from Thelephora ganbajun. Five extraction parameters (ethanol concentration, solvent to solid rati...

2011
En-Qin Xia Bo-Wei Wang Xiang-Rong Xu Li Zhu Yang Song Hua-Bin Li

Oleanolic acid and ursolic acid are the main active components in fruit of Ligustrum lucidum Ait, and possess anticancer, antimutagenic, anti-inflammatory, antioxidative and antiprotozoal activities. In this study, microwave-assisted extraction of oleanolic acid and ursolic acid from Ligustrum lucidum was investigated with HPLC-photodiode array detection. Effects of several experimental paramet...

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