粮食与油脂
糧食與油脂
양식여유지
CEREALS & OILS
2014年
1期
56-60
,共5页
糙米%物理特性%聚类分析%主成分分析
糙米%物理特性%聚類分析%主成分分析
조미%물리특성%취류분석%주성분분석
brown rice%physical characteristics%cluster analysis%principal component analysis
该文依据糙米长度、宽度、厚度、长宽比、当量直径、球面度、表面积、体积、容重、密度、空隙度、千粒重等物理特性，对不同糙米进行了聚类分析；并以碾米度为指标，对上述物理特性进行了主成分分析。结果表明，除密度和孔隙度外，不同糙米物理特性差异显著，在聚类分析中分为不同类别；主成分分析结果显示，糙米各物理特性间存在多重共线性，其中影响糙米碾米度主要因子为长度、宽度、长宽比、球面度和容重。
該文依據糙米長度、寬度、厚度、長寬比、噹量直徑、毬麵度、錶麵積、體積、容重、密度、空隙度、韆粒重等物理特性，對不同糙米進行瞭聚類分析；併以碾米度為指標，對上述物理特性進行瞭主成分分析。結果錶明，除密度和孔隙度外，不同糙米物理特性差異顯著，在聚類分析中分為不同類彆；主成分分析結果顯示，糙米各物理特性間存在多重共線性，其中影響糙米碾米度主要因子為長度、寬度、長寬比、毬麵度和容重。
해문의거조미장도、관도、후도、장관비、당량직경、구면도、표면적、체적、용중、밀도、공극도、천립중등물리특성，대불동조미진행료취류분석；병이년미도위지표，대상술물리특성진행료주성분분석。결과표명，제밀도화공극도외，불동조미물리특성차이현저，재취류분석중분위불동유별；주성분분석결과현시，조미각물리특성간존재다중공선성，기중영향조미년미도주요인자위장도、관도、장관비、구면도화용중。
Cluster analysis of brown rice cultivars was carried out based on the physical characteristics of length,width,thickness,aspect ratio,equivalent diameter,sphericity,surface area,volume,bulk density,true density,porosity and thousand seed weight. Principal component analysis,taken the degree of milling as response,of these physical characteristics was carried out as well. Cluster analysis showed that brown rice cultivars were divided into various categories due to the significant differences of physical characteristics. Principal component analysis indicated that length,width,aspect ratio, sphericity and bulk density were the key factors affecting the degree of milling.
