磨粉机配置和种子调节对研磨全麦面粉质量的影响外文资料翻译
机电工程学院
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正文： 外文资料译文 附 件： 外文资料原文
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正文：(粮食与农业科学杂志，第 97 卷，第 10 期)
磨粉机配置和种子调节对研磨全麦面粉质量的影响
Lingzhu Deng 、Frank A Manthey*
摘要
背景：本文研究开发了一种实验室研磨工艺，来制造全麦粉。并通过确定磨粉机
配置和种子调节对全麦面粉的粒度分布和质量的影响，对超离心磨粉机进行了
评估。
结果：随着筛网孔径从 1000μm 减小到 250μm，转子转速从 6000r/min 增加到
18000r/min，种子调理水分含量从 150g/kg 下降到 90g/kg，全麦面粉的粒径逐
渐减小。研磨过程中的进料速度不影响粒度分布。淀粉损伤随筛孔增大、转子转
速从 6000r/min 提高到 12 000r/min、种子调理水分含量从 150～90 g/ kg 降低
而减少。面粉温度随研磨参数变化而变化，但不超过 34 ℃。
结论：配置转子转速为 12 000r/min、筛孔为 250 μ m、种子调理水分为 90 g /kg
的超离心磨粉机，可得到 82%的颗粒小于 150 μ m、淀粉损伤为 59 g/ kg、面粉温
度低于 35 ℃的精细全麦粉。
关键词：全麦；硬质小麦；磨粉机加工；进料速度；种子调理
引言
附件：(外文资料原文)
Laboratory-scale milling of whole-durum flour quality: effect of mill
configuration and seed conditioning
Lingzhu Deng and Frank A Manthey*
Abstract
BACKGROUND: Research was conducted to develop a laboratory milling procedure to make
whole-durum flour. An ultracentrifugal mill was evaluated by determining the effect of mill
configuration and seed conditioning on particle size distribution and quality of whole-wheat flour.
RESULTS: Particle size of whole-wheat flour decreased as screen aperture decreased from 1000
to 250μm; as rotor speed increased from 6000 to 18 000 rpm; and as seed conditioning moisture
content decreased from 150 to 90 g kg−1. Feed rate during milling did not affect particle size
distribution. Starch damage decreased as screen aperture increased; as rotor speed increased from
6000 to12 000 rpm; and as seed conditioning moisture content decreased from 150 to 90 g kg−1.
Flour temperature varied with milling parameters but did not exceed 34 ∘C.
CONCLUSION: An ultracentrifugal mill configured with a rotor speed of 12 000 rpm, screen
aperture of 250 𝛍m, and seed conditioning moisture of 90 g /kg−1 resulted in a fine whole-wheat
flour where 82% of particles were ＜150 𝛍m，starch damage was 59 g kg−1, and flour
temperature was below 35 ∘C.
INTRODUCTION
There has been increased demand for food products that contain whole-wheat flour (WWF).
As a result, WWF production in the USA increased 13.7% from 2011 to 2015, reaching a total
production of 1.08 million metric tons in 2015, which is 5% of total wheat milled.
Commercially, WWF has been produced by milling wheat kernels using a single-stream one-
pass system common with a stone mill, plate mill, and hammer mill or a multi-stream
reconstitution system often associated with a roller mill. A single-stream-one pass system
commonly generates excessive heat, which can adversely affect the functional properties of milled
flour. For example, Rao and Prabhasanker reported temperatures generated during grinding of
wheat on a stone, plate, and hammer mill of 90, 85, and 55 C, respectively. Miller Jones et al.1∘
reported similar results with temperatures during milling of 85, 78, and 50 C for the stone, plate,∘
and hammer mill, respectively. These temperatures are capable of denaturing some protein and
promoting lipid oxidation. The multi-stream reconstitution system generally involves the use of a
roller mill. The bran and germ removed during roller milling is often ground using a hammer mill
and blended back into the wheat flour at levels found in the intact kernel to make WWF, according
to the definition of whole grain The roller milling system generates less heat as it accomplishes
size reduction slowly by using multiple passes. Flour temperatures of 32–35 °C are commonly
reported.
Currently, there are no standard methods for laboratory-scale milling of WWF. A single-
stream milling system would be simpler than a multi-stream reconstitution system. Most
laboratory-scale mills only mill a small sample size (25–250 g) and have a fixed mill
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机电工程学院毕业设计外文资料翻译设计题目:译文题目:学生姓名：学号：专业班级：指导教师：正文：外文资料译文附件：外文资料原文指导教师评语：签名：年月日正文：(粮食与农业科学杂志，第97卷，第10期)磨粉机配置和种子调节对研磨全麦面粉质量的影响LingzhuDeng、FrankAManthey*摘要背景：本文研究开发了一种实验室研磨工艺，来制造全麦粉。并通过确定磨粉机配置和种子调节对全麦面粉的粒度分布和质量的影响，对超离心磨粉机进行了评估。结果：随着筛网孔径从1000μm减小到250μm，转子转速从6000r/min增加到18000r/min，种子调理水分含量从150g/kg下降到90g/kg，...
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作者：闻远设计
分类：非标机械电气自动化
价格：25光币
属性：19 页
大小：1.27MB
格式：DOC
时间：2024-06-21
