Analysis of the quality of liquid smoke coconut shells using Technoher equipment

Abstract

Many food industry products require preservatives to extend their shelf life. Natural preservatives are a necessity for safe food products. One natural preservative can be made from coconut shells. Liquid smoke from coconut shells is produced using liquid smoke pyrolysis equipment which has been developed by authors called Technoher. This study aimed to compare physical and chemical properties of various grades of liquid smoke from coconut shells produced using Technoher equipment, and study the specific applications of liquid smoke based on the grades. To produce the expected quality (3 grades), 3 treatments are made. The results showed that Grade 1 (G1) specifically the G1+ treatment sample had the lowest PAH value of 0.00 µg/g, while the G1 had a value of 0.007 µg/g. Grade 2 consisting of G2 and G2+ treatments, yielded PAH values of 0.002 µg/g, and 0.006 µg/g respectively, while Grade 3, produced a value of 0.026 µg/g. Based on the results, the three grades of Coconut liquid smoke were within the tolerance limit for PAH (Benzo (a) pyrene). The products contain no toxic substances and are safe, with Grades 1 and 2 are food grade, while Grade 3 has the potential for non-food preservation (non-food grade).