生牛乳脂肪含量與比重檢測裝置之研製

Development on Device for Measuring Fat Content and Specific Gravity of Raw Bovine Milk

洪傳儀(Chwan-Yi Horng) ； 林聖泉(Tshen-Chan Lin) ； 區少梅(Shau-Mei Ou)

《農林學報》 49卷1期 (2000/03) Pp. 45-54

https://doi.org/10.30089/JAF.200003.0004

摘要

本研究利用生牛乳成分對不同波長之近紅外線具有不同吸收特性，進行生牛乳脂肪含量及比重檢測裝置之研製。檢測裝置主要由光感測器、鹵素燈、濾波鏡、鋁框等所構成。波長為1460nm與1700nm之濾波鏡用在脂肪含量之量測，波長為950nm與1680nm之濾波鏡用在比重之量測。利用本研究之檢測裝置，針對中興大學畜牧場與東海大學乳品加工廠生牛乳進行脂肪含量與比重之檢測試驗，根據試驗結果顯示：生牛乳脂肪含量迴歸方程式的相關係數r=0.97，校正標準誤差(SEC)=0.263%，驗証組的實際值與預測值之相關係數r=0.99，驗証標準誤差(SEP)=0.3%；生牛乳比重值迴歸方程式的相關係數r=0.96，校正標準誤差＝0158%，驗証組的實際值與預測值之相關係數r=0.95，驗証標準誤差＝0.169%。

關鍵字

生牛乳 ； 脂肪含量 ； 比重 ； 檢測裝置

並列摘要

By applying the property of near-infrared absorbed by different substances of raw bovine milk, an device for measuring fat content and specific gravity was developed in this study. The device consists of a photo-detector, a halogens-light bulb, photo-filters, and an aluminum frame. 1460 nm- and 1700 nm-filters are used in measuring fat content; 950 nm- and 1680 nm-filters are used in measuring specific gravity. Using the device to measure the fat content and specific gravity of raw bovine milk which came from Chung-Hsing pasture and Tung-Hai Milk Factory, the results showed that: In regard to the fat content of milk, the correlation coefficient of the regression equation was 0.97 and SEC was 0.263%. Using this equation to estimate the fat content for another group of milk, its correlation coefficient was 0.99 and its SEP was 0.3%. In regard to the specific gravity of milk, the con-elation coefficient of the regression equation was 0.96 and SEC was 0.158%. Similarly, using this equation to estimate the specific gravity for another group of milk, its correlation coefficient was 0.95 and its SEP was 0.169%.

並列關鍵字

Raw Bovine Milk ； Fat Content ； Specific Gravity ； Device