Recent Progress in Electronic Noses for Fermented Foods and Beverages Applications

Abstract

Fermented foods and beverages have become a part of daily diets in several societies around the world. Emitted volatile organic compounds play an important role in the determination of the chemical composition and other information of fermented foods and beverages. Electronic nose (E-nose) technologies enable non-destructive measurement and fast analysis, have low operating costs and simplicity, and have been employed for this purpose over the past decades. In this work, a comprehensive review of the recent progress in E-noses is presented according to the end products of the main fermentation types, including alcohol fermentation, lactic acid fermentation, acetic acid fermentation and alkaline fermentation. The benefits, research directions, limitations and challenges of current E-nose systems are investigated and highlighted for fermented foods and beverage applications.

Low-cost electronic-nose (LC-e-nose) systems for the evaluation of plantation and fruit crops: recent advances and future trends

“…During wet fermentation, the coffee cherries are soaked in water, and the fruit pulp surrounding the beans is broken down by natural microorganisms, such as bacteria and yeast, which can significantly influence the flavor and aroma of coffee. Wet fermentation can help to remove any undesirable flavors or odors from the coffee, while also enhancing the desirable ones, like bringing out fruity or floral notes in coffee 86 that come from coffee's VOCs. This aspect was investigated using electronic noses for quality control of Colombian coffee.…”

Flexible humidity sensor based on PEDOT:PSS/Mxene nanocomposite

“…Humidity sensors are significant in various applications such as agriculture, pharmaceuticals, climatology, foods and household appliances [1][2][3][4][5][6]. So far, several types of sensors have been reported to be the humidity transducer such as piezoresistive, gravimetric, optical, capacitive, resistive and magnetoelastic [7][8][9][10][11][12].…”

Room-Temperature Ammonia Gas Sensor Based on Ti3C2Tx MXene/Graphene Oxide/CuO/ZnO Nanocomposite

“…Volatile organic compounds (VOCs) are organic chemicals that easily evaporate at room temperature leading to harmful effects on health and the environment . Among various VOCs, ammonia (NH 3 ) is one of the most popular VOCs that can be found in many household and industrial cleaners, production of chemicals, refrigeration system, agriculture, fertilizer, etc. , Recently, NH 3 can be considered as a significant biomarker by means of analysis via exhaled breath for disease diagnosis such as chronic liver disease, chronic kidney disease, and peptic ulcer symptoms. − Moreover, NH 3 is also used as a quality indicator in food such as for fish freshness, meat freshness, and marine freshness. − Therefore, the detection of NH 3 at room temperature is of great importance to apply in many fields. Although an electrochemical-based NH 3 gas sensor is available in market and owns high selectivity, the development of a resistive-based NH 3 gas sensor is still ongoing because the resistive-based type of gas sensor provides wide-range detection, simple operation, small size, low power consumption, low-cost production, fast recovery time, and high sensitivity.…”