中国井矿盐
中國井礦鹽
중국정광염
CHINA WELL AND ROCK SALT
2015年
1期
39-43
,共5页
鲜味盐%氨基酸态氮%提取物%测定方法
鮮味鹽%氨基痠態氮%提取物%測定方法
선미염%안기산태담%제취물%측정방법
Flavor salt%amino acid nitrogen%extract%determination method
比较了甲醛滴定法和比色法测定鲜味提取物中氨基酸态氮含量的精确度与准确度，并通过单因素试验和正交试验优化了测定条件，选择出一种适用于鲜味提取物和鲜味盐中氨基酸态氮含量的测定方法。结果表明：比色法的最小偏差小，最低检出限为0.5μg/mL，准确度和精确度较高。比色法测定鲜味提取物中氨基酸态氮的优化条件为：反应温度为100℃、反应时间20～22min、显色剂用量4～5mL、缓冲溶液用量4mL。
比較瞭甲醛滴定法和比色法測定鮮味提取物中氨基痠態氮含量的精確度與準確度，併通過單因素試驗和正交試驗優化瞭測定條件，選擇齣一種適用于鮮味提取物和鮮味鹽中氨基痠態氮含量的測定方法。結果錶明：比色法的最小偏差小，最低檢齣限為0.5μg/mL，準確度和精確度較高。比色法測定鮮味提取物中氨基痠態氮的優化條件為：反應溫度為100℃、反應時間20～22min、顯色劑用量4～5mL、緩遲溶液用量4mL。
비교료갑철적정법화비색법측정선미제취물중안기산태담함량적정학도여준학도，병통과단인소시험화정교시험우화료측정조건，선택출일충괄용우선미제취물화선미염중안기산태담함량적측정방법。결과표명：비색법적최소편차소，최저검출한위0.5μg/mL，준학도화정학도교고。비색법측정선미제취물중안기산태담적우화조건위：반응온도위100℃、반응시간20～22min、현색제용량4～5mL、완충용액용량4mL。
This pa per compares the precision and accuracy of the content of amino nitrogen in the extract of flavor. And the determination conditions is optimized through single factor experiments and orthogonal test. We choose a suitable method for the determination of content of the content of amino nitrogen in the extract of flavor. We conclude the minimum deviation of colorimetry is small; the minimum detection limit is 0.5 g/mL, and the accuracy and precision is high. optimal conditions for the determination of colorimetric method for amino acid nitrogen flavor extracts is reaction temperature 100 C, reaction time 20 ~ 22min, chromogenic agent 4-5mL, and dosage of buffer solution 4mL.
