Dissertation > Excellent graduate degree dissertation topics show

Studies on the Effect of Milling Process on Colors of the Wet Noodle

Author: YaoXianWei
Tutor: GuoZuoXiang
School: Henan University of Technology
Course: Cereals, Oils and Vegetable Protein Engineering
Keywords: Milling process Wet Noodle Color Wheat polyphenol oxidase Peeling treatment
CLC: TS211
Type: Master's thesis
Year: 2010
Downloads: 82
Quote: 0
Read: Download Dissertation

Abstract

The main topic for issues of common concern in the milling and wet noodle processing industry: poor color reversion of flour and a wet noodle color stability study. Obtained through the analysis of the physical and chemical indicators of online powder flow and powder flow wet dough sheet color the wet dough sheet color physical and chemical indicators: the whiteness of the flour with the wet surface color film values ??into significant positive correlation; flour ash content a wet noodle color values ??into a highly significant positive correlation; flour polyphenol oxidase enzyme (PPO) wet noodle sheet color values ??into a highly significant positive correlation; crude protein content of the flour with the wet surface color film value into significant positive correlation. Traditional milling process the wheat processing industry in China is widely used as a research object, traditional milling technology in processing wet noodle production the special flour prone to browning, combined with state-of-the-art domestic flour milling concept, through the milling process correction powder flow sampling and online analysis, study after the correction process wet dough sheet color stability and comparative analysis of the two processes to come to the relationship between the milling process with a wet noodle color change: skin grinding powder process, the traditional system powder technology emphasizes materials of different particle size grinding, material grading less emphasis on material grading and improving the milling process, special materials separate processing and light roll paper mill to reduce the degree of fragmentation on bran tablets , to ensure the integrity of the sheet of the bran, to expand the difference between the skin grinding materials. Studies: improved technology 1B powder stream ash content reduced about 0.1%, ash content of 2B powder flow reduced 0.1% 4B powder flow ash content reduced 0.1%, the PPO vitality cumulative reduction of about 25 vitality. Mind grinding systems, process improvements relative to traditional milling process reinforces the classification of materials, the ash content of the powder flow of the first road PPO activity and wet facets color stability is better than traditional milling process. Slag grinding and tail grinding system, due to the improved process emphasized the role of the Qing powder, ash content, PPO activity is lower than traditional milling process. The clear powder system and re-screen system powder flow both processes can be drawn: improved milling technology combined with the special treatment of special materials to extend the length of the Qing powder flow, reduce cross-contamination of different materials, PPO activity of different materials Qing powder, on this basis, to improve the material into the grinding material purity, reduce the ash content of powder flow, PPO activity and the wet noodle color film value. On wheat peeling process laboratory pulverizing: With increase in peeling Road number, the ash content of the flour PPO activity significantly increased wet surface color film values ??significantly increased, which verifies: wheat peeling treatment, take simple laboratory milling process is not conducive to maintaining the stability of the the wet dough sheet color.

Related Dissertations

CLC: > Industrial Technology > Light industry,handicrafts > Food Industry > Food processing industry > Flour industry
© 2012 www.DissertationTopic.Net Mobile