scholarly journals Analysis Method for Overseas Production Preparation Process

2005 ◽  
Vol 71 (705) ◽  
pp. 1734-1741
Author(s):  
Shuichi SATO ◽  
Yutaka INAMORI ◽  
Masaru NAKANO ◽  
Toshiyuki SUZUKI ◽  
Nobuaki MIYAJIMA
Keyword(s):  
Preparation Process ◽  
Analysis Method ◽  
Production Preparation

scholarly journals Quantitative Analysis of Six Phenolic Acids in Artemisia capillaris (Yinchen) by HPLC-DAD and Their Transformation Pathways in Decoction Preparation Process

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Fang Tian ◽  
Qun-Jia Ruan ◽  
Ying Zhang ◽  
Hui Cao ◽  
Zhi-Guo Ma ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Drug Efficacy ◽  
Preparation Process ◽  
Analysis Method ◽  
Artemisia Capillaris ◽  
Caffeoylquinic Acid ◽  
Dicaffeoylquinic Acid ◽  
Quantitative Analysis Method ◽  
The Relationship ◽  
Internal Relationships

We aimed to establish a quantitative analysis method of six constituents (5-caffeoylquinic acid, 3-caffeoylquinic acid, 4-caffeoylquinic acid, 1,3-dicaffeoylquinic acid, 3,4-dicaffeoylquinic acid, and 4,5-dicaffeoylquinic acid) in Artemisia capillaris (Yinchen) and its decoction by using HPLC coupled with DAD. Besides, the transformation paths of the six constituents were analyzed in decoction preparation processing. The analytical method was fully validated in terms of linearity, sensitivity, precision, repeatability, and recovery and applied to assess the transformation trend and quantitative analysis of the six constituents in Yinchen decoction. The contents of six constituents varied greatly in Yinchen herb and Yinchen decoction, and there were inextricable internal relationships between them. Presumably 3-caffeoylquinic acid was isomerized to generate 5-caffeoylquinic acid and 4-caffeoylquinic acid. Similarly, 1,3-dicaffeoylquinic acid and 3,4-dicaffeoylquinic acid were produced by isomerization of 4,5-dicaffeoylquinic acid. In conclusion, this study provides a chemical basis for quality control of Yinchen decoction, and the changes of selected markers in decoction could give us some novel perspectives to study the relationship between substances and drug efficacy.

scholarly journals Solving Quality Problems in Tyre Production Preparation Process: A Practical Approach

2017 ◽  
Vol 11 ◽  
pp. 1239-1246 ◽  
Author(s):  
B. Barbosa ◽  
M.T. Pereira ◽  
F.J.G. Silva ◽  
R.D.S.G. Campilho
Keyword(s):  
Practical Approach ◽  
Preparation Process ◽  
Production Preparation

scholarly journals 6105 Development of Software System for Reengineering Production Preparation Process

2005 ◽  
Vol 2005 (0) ◽  
pp. 77-78
Author(s):  
Shuichi Sato ◽  
Yutaka Inamori ◽  
Masaru Nakano ◽  
Toshiyuki Suzuki ◽  
Nobuaki Miyajima
Keyword(s):  
Software System ◽  
Preparation Process ◽  
Production Preparation

Automated Manufacturability Analysis of the Draw Bending of Complex Aluminum Profiles

2009 ◽  
Author(s):  
Joel Johansson
Keyword(s):  
Finite Element ◽  
Design Automation ◽  
Practical Experience ◽  
Single Step ◽  
Preparation Process ◽  
Manufacturing Companies ◽  
Automation Systems ◽  
Cad Models ◽  
Draw Bending ◽  
Production Preparation

Manufacturing companies are required to develop and produce products that meet increased requirements from customers and investors on shortened time spans. One key factor in meeting these requirements is the efficiency of the product development and the production preparation process. Design automation is a powerful tool to increase efficiency in these two processes. The benefits of automating the production preparation process are shortened lead-time, improved product performance, and ultimately decreased cost. Further, automation is beneficial as it increases the ability to adapt products to new product specifications with production preparations done in few or in a single step. During the automation process, knowledge about the production preparation process is collected and stored in the corporation systems, thus allowing full control over the design of production equipments. The contribution of this work is a method for connecting knowledge pieces implemented in auxiliary software applications using an inference engine. The knowledge pieces can control CAD-models and automatically generate, execute, and interpret finite element analyses. The presented method allows the automation of corporation know-how developed by skilled engineers over time. Further, it is possible for the resulting systems to meet criteria for good design automation systems such as low effort of developing, low level of investment, user readable and understandable knowledge, scalability, and flexibility. The method is exemplified by an implementation for analyzing manufacturability of the rotary draw bending of extruded sections of aluminum where the sections are complex. The output from the example system is based on established design practice and heuristic knowledge developed over many years of practical experience, rules analytically derived from fundamental physical laws, and finite element calculations. The system applies knowledge to a given specification that a skilled engineer otherwise would do manually. The method is described along with the example system in this paper.

scholarly journals ANALISIS KADAR POLIFENOL DAN AKTIVITAS ANTIOKSIDAN YANG TERDAPAT PADA EKSTRAK BUAH : STUDI KEPUSTAKAAN

2022 ◽  
Vol 6 (6) ◽  
Author(s):  
Elma Febriana ◽  
Tamrin Tamrin ◽  
RH Fitri Faradilla
Keyword(s):  
Antioxidant Activity ◽  
Vitis Vinifera ◽  
Citrullus Lanatus ◽  
Preparation Process ◽  
Analysis Method ◽  
Polyphenol Content ◽  
Fruit Extract ◽  
Liquid Samples ◽  
Dragon Fruit ◽  
Hylocereus Polyrhizus

ABSTRACTPolyphenols are one of the largest categories of phytochemicals and are the most widely distributed among various types of plants and fruits. Polyphenols can also inhibit, prevent, and reduce oxidation by free radicals, which are good for health. Analysis of polyphenol content starts from the sample preparation process which includes the extraction of solid and liquid samples. The types of solvents commonly used for extraction are ethanol, methanol, and acetone. Furthermore, the analysis of polyphenol levels uses the Folin-Ciocalteau analysis method. The results of the review show that ripe bisbul fruit extract (Diospyros blancoi A. DC.) which was extracted using ethanol as a solvent had the highest polyphenol content and yield of several fruit extracts reported in this review. Meanwhile, the extract of green grapes (Vitis vinifera Linn. Var. Chinsiang) which was extracted using ethanol as a solvent had the lowest levels and yields of polyphenols. The highest antioxidant activity was shown by samples of red dragon fruit extract (Hylocereus polyrhizus (f.a.c weber) britton & rose). Meanwhile, the lowest antioxidant activity was shown by samples of Watermelon (Citrullus lanatus) fruit extract.Keywords: Pholyphenol, Extracts, Solvents, Folin CiocalteauABSTRAKPolifenol adalah salah satu kategori terbesar dari fitokimia yang paling banyak penyebarannya diantara berbagai jenis tanaman dan buah-buahan. Polifenol juga dapat menghambat, mencegah, mengurangi oksidasi oleh radikal bebas sehingga baik untuk kesehatan. Analisis kadar polifenol dimulai dari proses preparasi sampel yang meliputi ekstrasi sampel padat dan ekstraksi sampel cair. Jenis pelarut yang umum digunakan saat pengekstrakan yaitu etanol, metanol, dan aseton. Selanjutnya analisis kadar polifenol menggunakan metode analisis folin ciocalteau. Hasil review menunjukkan Ekstrak buah bisbul matang (Diospyros blancoi A. DC.) yang diekstrak menggunakan pelarut etanol memiliki kadar dan rendemen polifenol yang tertinggi dari beberapa ekstrak buah yang dilaporkan dalam review ini. Sedangkan ekstrak buah anggur hijau (Vitis vinifera Linn. Var. Chinsiang) yang diekstrak menggunakan pelarut etanol memiliki kadar dan rendemen polifenol yang terendah. Aktivitas antioksidan yang tertinggi ditunjukkan oleh sampel ekstrak buah naga Merah (Hylocereus polyrhizus (f.a.c weber) britton & rose) dibandingkan sampel lain dalam review ini. Sedangkan aktivitas antioksidan yang terendah ditunjukkan oleh sampel ekstrak buah Semangka (Citrullus lanatus) dibandingkan sampel lain dalam review ini.Kata kunci: Polifenol, ekstraksi, pelarut, folin ciocalteau

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