山东科学
山東科學
산동과학
SHANDONG SCIENCE
2012年
3期
95-97
,共3页
高广恒%周万里%朱思荣%毕春元%赵晓华%史建国
高廣恆%週萬裏%硃思榮%畢春元%趙曉華%史建國
고엄항%주만리%주사영%필춘원%조효화%사건국
DNS%还原糖%比色法
DNS%還原糖%比色法
DNS%환원당%비색법
DNS%reducing sugar%colorimetry
设计了一种利用DNS原理来检测还原糖的测定仪,该测定仪可以检测低浓度的还原糖,操作方便、维护简单、精度高、重复性好。利用比色法检测加热前后染液的吸光值差值来计算样品中还原糖的含量,得到还原糖含量和吸光值成比例关系。最后利用0.1%的葡萄糖进行定标测量,线性在0.99以上,测量范围在0%-0.1%。可以稳定地检测到啤酒、山梨醇和发酵液等样品里还原糖的含量,不受氨离子的干扰,效果好、数据准确可靠、使用方便。
設計瞭一種利用DNS原理來檢測還原糖的測定儀,該測定儀可以檢測低濃度的還原糖,操作方便、維護簡單、精度高、重複性好。利用比色法檢測加熱前後染液的吸光值差值來計算樣品中還原糖的含量,得到還原糖含量和吸光值成比例關繫。最後利用0.1%的葡萄糖進行定標測量,線性在0.99以上,測量範圍在0%-0.1%。可以穩定地檢測到啤酒、山梨醇和髮酵液等樣品裏還原糖的含量,不受氨離子的榦擾,效果好、數據準確可靠、使用方便。
설계료일충이용DNS원리래검측환원당적측정의,해측정의가이검측저농도적환원당,조작방편、유호간단、정도고、중복성호。이용비색법검측가열전후염액적흡광치차치래계산양품중환원당적함량,득도환원당함량화흡광치성비례관계。최후이용0.1%적포도당진행정표측량,선성재0.99이상,측량범위재0%-0.1%。가이은정지검측도비주、산리순화발효액등양품리환원당적함량,불수안리자적간우,효과호、수거준학가고、사용방편。
We designed a DNS based reducing sugar detector. It has such advantages as low-concentration reducing sugar detection, convenient operation, easy maintenance, high accuracy and good repeatability. It employs colorimetry to detect the differential light absorption value of dye liquor before and after heating and then to calculate the content of reducing sugar in a sample. We discover that the content of reducing sugar is proportional to the light absorption value. Glucose of 0.1% is used to calibrate measurement. The linear rate of more than 0.99 exists when the concentration range is between 0% and 0.1%. The detector can stably detect the content of reducing sugar in beer, sorbitol and ferment.