Authentication of geographical growth origin of black pepper (piper nigrum l.) based on volatile organic compounds profile: A case study for Malaysia and India black peppers. - Zehnder J. A. Mercer; Hong Siang Chua; Peter Mahon; Siaw San Hwang; Sing Muk Ng (ISOEN, 2019)

Fraud detection of black pepper using metal oxide semiconductor gas sensors. - Hui En Lee; Hong Siang Chua; Zehnder J. A. Mercer; Sing Muk Ng; Mahnaz Shafiei (IEEE SENSORS, 2021)

Metal Oxide Semiconductor Gas Sensors-based E-nose and Two-stage Classification: Authentication of Malaysia and Vietnam Black Pepper Samples. - Hui En Lee; Zehnder J. A. Mercer; Sing Muk Ng; Mahnaz Shafiei; Hong Siang Chua (ISOEN, 2022)