Principal Component Analysis (PCA) Method for Classification of Beef and Pork Aroma Based on Electronic Nose

Imam Tazi; Nur Laila Isnaini; Mutmainnah Mutmainnah; Avin Ainur

doi:10.15575/ijhar.v1i1.4155

Authors

Imam Tazi Department of Physics, Faculty of Science,and Technology, UIN Maulana Malik Ibrahim Malang, Indonesia
Nur Laila Isnaini Department of Physics, Faculty of Science,and Technology, UIN Maulana Malik Ibrahim Malang, Indonesia
Mutmainnah Mutmainnah Department of Physics, Faculty of Science,and Technology, UIN Maulana Malik Ibrahim Malang, Indonesia
Avin Ainur School of Medicine, Faculty of Medicine and Health Science, UIN Maulana Malik Ibrahim Malang, Indonesia

DOI:

https://doi.org/10.15575/ijhar.v1i1.4155

Keywords:

Electronic Nose, Array Sensor, Classification, PCA

Abstract

There are several testing processes for consuming meat products. Organoleptic evaluation is an evaluation based on color, texture, smell, and taste. This research aims to find out the response pattern of 10 gas sensor array contained in the electronic nose against the odor pattern of beef and pork base on a smell. The classification method used is using the Principal Component Analysis (PCA) method. This method is expected to simplify the test of differences in beef and pork based on the aroma. The meat used is standard beef and pork consumption that has been sold in supermarkets. Samples of beef and pork are then ground until smooth. After that, it is weighed until it reaches 1 ounce. The meat samples were tested using an electronic nose consisting of 10 gas sensors. The multivariate analysis method was used to classify the aroma of beef and pork. The results of the data processing showed that the aroma classification of beef and pork which was indexed by the electronic nose was perfect. Based on the PCA method, the proportion of PC1 is 93.4%, and PC2 is 4.9%. From the second cumulative number, the value of the first PC was obtained 98.3%. This value indicates that only with 2-dimensional data, can represent ten dimensions of data. The loading plot shows that the MQ-138 and MQ-3 sensors are the most powerful sensors in testing samples of beef and pork.

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