粮油食品科技
糧油食品科技
량유식품과기
Science and Technology of Cereals, Oils and Foods
2015年
5期
68-71
,共4页
高向阳%朱盈蕊%高遒竹%王长青
高嚮暘%硃盈蕊%高遒竹%王長青
고향양%주영예%고주죽%왕장청
彩色小麦%色素%变色范围%吸收光谱
綵色小麥%色素%變色範圍%吸收光譜
채색소맥%색소%변색범위%흡수광보
color wheat%pigment%colour range%absorption spectra
探讨南阳彩色小麦色素的变色范围和吸收光谱等特性，为该资源的科学利用和开发提供参考。以南阳灰麦为材料，用酸性乙醇溶液超声波辅助浸提色素后，用酸碱滴定法和分光光度法测定。结果表明：在可见光区，色素乙醇溶液的最大吸收波长为541 nm，变色范围为 pH 4．75～6.58；灰麦色素是较理想、经济的环保型酸碱指示剂，也可作为天然着色剂和抗氧化剂等食品添加剂加以开发利用。
探討南暘綵色小麥色素的變色範圍和吸收光譜等特性，為該資源的科學利用和開髮提供參攷。以南暘灰麥為材料，用痠性乙醇溶液超聲波輔助浸提色素後，用痠堿滴定法和分光光度法測定。結果錶明：在可見光區，色素乙醇溶液的最大吸收波長為541 nm，變色範圍為 pH 4．75～6.58；灰麥色素是較理想、經濟的環保型痠堿指示劑，也可作為天然著色劑和抗氧化劑等食品添加劑加以開髮利用。
탐토남양채색소맥색소적변색범위화흡수광보등특성，위해자원적과학이용화개발제공삼고。이남양회맥위재료，용산성을순용액초성파보조침제색소후，용산감적정법화분광광도법측정。결과표명：재가견광구，색소을순용액적최대흡수파장위541 nm，변색범위위 pH 4．75～6.58；회맥색소시교이상、경제적배보형산감지시제，야가작위천연착색제화항양화제등식품첨가제가이개발이용。
The absorption spectral characteristics and colour range of pigment in Nanyang grey wheat was studied,which provided reference for scientific utilization and development of the pigment.Nanyang grey wheat was soaked in acidic ethanol to extract pigment by ultrasonic.The pigment was determined by acid-base titration and spectrophotometry.The results showed that in the visible region the maximum ab-sorption wavelength lied at 541 nm,colour range was pH 4.75 ~6.58.The pigment in grey wheat is a relatively ideal,economical and environmentally friendly acid -base indicator,it can be developed and used as a natural colorant and antioxidant in food.
