Articles

Found 2 Documents
Search
Journal : AGROLAND

SIFAT FISIKA DAN KIMIAWI KOMPONEN ASAP CAIR TEMPURUNG KELAPA HASIL ADSORPSI PADA ARANG AKTIF Kadir, Syahraeni; Darmadji, Purnama Darmadji; Hidayat, Chusnul; Supriyadi, Supriyadi
AGROLAND Vol 21, No 1 (2014)
Publisher : AGROLAND

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB)

Abstract

Characterization of physical and chemical properties of aroma compounds from liquid smoke is a challenge because there is no satisfactory method of separation due to compound contributors generally present in a matrix at very low concentrations. This study aimed to separate and identify the components of "strong and pungent" liquid smoke aromatic compounds by adsorption using activated carbon method. The observed variables analyzed using GC-MS including yield, phenol, carbonyl, titration acidity and chemical compound profiles. The chemical components of liquid smoke found on the analysis by GC-MS were further analyzed using a molecular mechanics software to determine the polarizability, hydrophobicity and dwipol moment of each compound     in the liquid smoke fraction adsorption results. The analysis of variance (ANOVA) with SPSS software version 16, followed by Duncan Multiple Range Test at the level of 1% was employed especially for the yield of liquid smoke adsorption. The physico-chemical characteristics of  25 fractions of liquid smoke resulted from adsorption on activated carbon at pH 2-6 comprising of 0.53 to 3.89% phenolic; 1.09 to 2.59% carbonyl; 7.17 to 10.75% acidicity; and pH range from     2.39 to 2.91 with the color spectrum in the range of 308-415 nm. The results of the analysis using the molecular mechanics methods showed that the higher the value of polarizability and dipole moment of a compound, the more polar the compound. It is concluded that the removal of the "strong and pungent" aroma compounds on coconut shell liquid smoke in order to produce a mild scent (soft) can be performed by activated carbon adsorption method despite the results were not optimal yet. A polar adsorbent such as zeolite is requiredin the adsorption method for the removal of "strong and pungent” aroma compounds on liquid smoke
SIFAT SENSORIS ASAP CAIR TEMPURUNG KELAPA HASIL ADSORPSI PADA ZEOLIT Kadir, Syahraeni; Darmadji, Purnama; Hidayat, Chusnul; Supriyadi, Supriyadi
Agroland Vol 21, No 2 (2014)
Publisher : Agroland

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.22487/J.24077607.2014.v21.i2.8192

Abstract

Liquid smoke has a strong and pungent distinctive aroma caused some contributors compounds in these products, among others, phenolic, carbonyl and acid. Adsorption using zeolites in this study aimed to reduce the levels of hard pungent aroma compounds contributors so that liquid smoke can be accepted by consumers. Various pH zeolite ie 2, 3, 4, 5 and 6 are used as adsorbent liquid smoke where the fraction of adsorption results sensory analyzed by 20 panelists selected. Liquid smoke fraction was selected based on the results of sensory testing further analyzed using GC-MS and then analyzes the data using analysis of variance (ANOVA) with SPSS software version 16, followed by Duncan range test level of 1%. The results showed that as many as 14 fractions were tested for sensory worth of 25 fractions of liquid smoke coconut shell results in zeolite adsorption pH 2-6 where 11 other factions have a scent that is "hard and pungent". Contributors to the volatile aroma compounds in the liquid smoke by GC-MS assay include phenolic groups, carbonyl and acid. Adsorption coconut shell liquid smoke using zeolite effectively reduced the smell "hard pungent" of the product. Necessary to evaluate the shelf life of liquid smoke zeolite adsorption results. Key Words :  Adsorption, aroma, coconut shell, liquid smoke, zeolite.