Physicochemical Characterization of Qianghuo Particles by Ultrafine Pulverization

Qianghuo, as a medicinal plant , has been demonstrated useful for the treatment of ache diseases in China. The physicochemical characterization of Qianghuo particles was greatly influenced by ultrafine pulverization. To study the physicochemical characterization of Qianghuo, the raw plant material of Qianghuo was ground to 5 μm particles by HSCS (High Speed Centrifugal Sheering) pulverizer. The micron particles were characterized by optical microscope and SEM. Ferulic acid is special chemical component of Qianghuo, and its extraction yield was determined to evaluate the chemical characterization of Qianghuo powder. Ferulic acid was analyzed by HPLC (High Performance Liquid Chromatography). The results showed that after ultrafine pulverization ,the plant cell walls were broken into pieces and the extraction yield of ferulic acid was increased by 30.24% compared with the original particles.

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Physicochemical Characterization of Chuanxiong Particles by Ultrafine Pulverization

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.55-57.1725 ◽

2011 ◽

Vol 55-57 ◽

pp. 1725-1730 ◽

Cited By ~ 1

Author(s):

Lian Wei Yang ◽

Rui Jie Wang ◽

Miao Jia ◽

Guo Sheng Gai

Keyword(s):

Ferulic Acid ◽

High Speed ◽

High Performance ◽

Physicochemical Characterization ◽

Chemical Characterization ◽

Optical Microscope ◽

Cerebrovascular Diseases ◽

Extraction Yield ◽

Plant Cell Walls

Chuanxiong, as a medicinal plant, has been demonstrated useful for the treatment of cardio-cerebrovascular diseases in China. The physicochemical characterization of Chuanxiong particles was greatly influenced by ultrafine pulverization. To study the physicochemical characterization of Chuanxiong, the raw plant material of Chuanxiong was ground to 6 μm particles by HSCS (High Speed Centrifugal Sheering) pulverizer. The micron particles were characterized by optical microscope and SEM. Ferulic acid is one of active ingredients of Chuanxiong, and its extraction yield was determined to evaluate the chemical characterization of Chuanxiong powder. Ferulic acid was analyzed by HPLC (High Performance Liquid Chromatography). The results showed that after ultrafine pulverization, the plant cell walls were broken into pieces and the extraction yield of ferulic acid was increased by 7.739% compared with the normal particles.

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Preparation and Characterization of Honghua Powders by Ultrafine Pulverization

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.454.55 ◽

2012 ◽

Vol 454 ◽

pp. 55-58

Author(s):

Lian Wei Yang ◽

Rui Jie Wang ◽

Guo Sheng Gai

Keyword(s):

Electron Microscope ◽

Plant Material ◽

Blood Circulation ◽

High Speed ◽

Physicochemical Characterization ◽

Chemical Characterization ◽

Hydroxysafflor Yellow A ◽

Laser Scattering ◽

Scanning Electron

Honghua has been demonstrated useful for promoting blood circulation and stopping pain. The physicochemical characterization of Honghua powders was greatly influenced by ultrafine pulverization. To study the physicochemical characterization of Honghua, the raw plant material of Honghua was ground to powders by high speed centrifugal sheering (HSCS) pulverizer. The micron powders were characterized by laser scattering granulometric analyzer and scanning electron microscope (SEM). Hydroxysafflor yellow A is one of active ingredients of Honghua, and its dissolution speed was determined to evaluate the chemical characterization of Honghua powder. The results showed that after ultrafine pulverization, dissolution speed of hydroxysafflor yellow A was increased by 28.6% compared with the normal powders

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Enzymatic Synthesis and Characterization of Different Families of Chitooligosaccharides and Their Bioactive Properties

Applied Sciences ◽

10.3390/app11073212 ◽

2021 ◽

Vol 11 (7) ◽

pp. 3212

Author(s):

Noa Miguez ◽

Peter Kidibule ◽

Paloma Santos-Moriano ◽

Antonio O. Ballesteros ◽

Maria Fernandez-Lobato ◽

...

Keyword(s):

High Performance ◽

Chemical Characterization ◽

Amperometric Detection ◽

Anion Exchange Chromatography ◽

Exchange Chromatography ◽

Enzymatic Production ◽

Bioactive Properties ◽

Substrate Properties ◽

Chitin Hydrolysis

Chitooligosaccharides (COS) are homo- or hetero-oligomers of D-glucosamine (GlcN) and N-acetyl-D-glucosamine (GlcNAc) that can be obtained by chitosan or chitin hydrolysis. Their enzymatic production is preferred over other methodologies (physical, chemical, etc.) due to the mild conditions required, the fewer amounts of waste and its efficiency to control product composition. By properly selecting the enzyme (chitinase, chitosanase or nonspecific enzymes) and the substrate properties (degree of deacetylation, molecular weight, etc.), it is possible to direct the synthesis towards any of the three COS types: fully acetylated (faCOS), partially acetylated (paCOS) and fully deacetylated (fdCOS). In this article, we review the main strategies to steer the COS production towards a specific group. The chemical characterization of COS by advanced techniques, e.g., high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD) and MALDI-TOF mass spectrometry, is critical for structure–function studies. The scaling of processes to synthesize specific COS mixtures is difficult due to the low solubility of chitin/chitosan, the heterogeneity of the reaction mixtures, and high amounts of salts. Enzyme immobilization can help to minimize such hurdles. The main bioactive properties of COS are herein reviewed. Finally, the anti-inflammatory activity of three COS mixtures was assayed in murine macrophages after stimulation with lipopolysaccharides.

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Characterization of water soluble pentosans of enzyme supplemented dough and breads/ Caracterización de las pentosanas solubles en agua extraídas de masa y pan conteniendo enzimas comerciales

Food Science and Technology International ◽

10.1177/108201320000600302 ◽

2000 ◽

Vol 6 (3) ◽

pp. 197-205 ◽

Cited By ~ 5

Author(s):

T. Jimenez ◽

M.A. Martinez-Anaya

Keyword(s):

Molecular Weight ◽

Ferulic Acid ◽

Synergistic Effects ◽

Extraction Yield ◽

Water Soluble ◽

Sugar Composition ◽

Enzyme Preparations ◽

Processing Enzyme ◽

Enzyme Source

Water soluble pentosans (WSP) from doughs and breads made with different enzyme preparations are characterized according to extraction yield, sugar composition, xylose/arabinose ratio and molecular weight (MW) distribution. Extraction yield was greater for dough than for bread samples, ranging from 0.94 to 1.64%, but bread extracts had a higher purity. Percent of pentoses in purified WSP was greater in pentosanase supplemented samples (28-55%) than in control and amylase containing samples (23-32%). Major sugars were xylose and arabinose, but glucose and mannose also appeared in the extracts. The xylose/arabinose (Xyl/Ara) ratio was 1.3-1.6 and underwent small changes during processing. Enzyme addition caused an increase in Xyl/Ara ratio, attributable to a debranching of arabinoxylans (AX) with higher degree of Ara substitution by arabinofuranosidase. Addition of pentosanases had a significant effect in increasing WSP with MW over 39 000, whereas those of low MW changed only slightly. MW distribution depended on enzyme source, and whereas some enzymes showed activity during fermentation others increased their activity during baking. No synergistic effects were observed in studied variables due to the combination of amylases with pentosanases. Protein in WSP extracts eluted together with ferulic acid suggesting they were linked, but not associated with a determined carbohydrate fraction.

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Characterization of Rotating Cavitation in a High Speed Inducer of Liquid Rocket Engine

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.320.196 ◽

2011 ◽

Vol 320 ◽

pp. 196-201

Author(s):

Fei Tang ◽

Li Jia Wen

Keyword(s):

High Speed ◽

High Performance ◽

Rocket Engine ◽

Liquid Rocket Engine ◽

Blade Surface ◽

Cavitation Phenomenon ◽

Flow Fluctuations ◽

Blade Cascade ◽

Liquid Rocket

Rotating cavitation is one of the most important problems in the development of modern high performance rocket pump inducers. In this paper, a numerical simulation of rotating cavitation phenomenon in a 2D blade cascade of liquid rocket engine inducer was carried out using a mixture model based on Rayleigh-Plesset equation. The purpose is to investigate the characterization of rotating cavitation in a high speed inducer. The results show that when sub-synchronous rotating cavitation occurs, the speed for the length of the blade surface cavitation is lower than the speed frequency of rotation shaft with the same direction. The external aspect is that the pressure at the upstream of blades changes synchronous. Thus, the generation of sub-synchronous rotating cavitation is closely related to the changes of flow angel which caused by the flow fluctuations. Hence, elimination of the flow rate redistribution among the flow channel can effectively suppress the occurrence of this phenomenon.

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