Penyediaan Biofilm Berbasis Pektin Kulit Buah Cempedak (Artocarpus champaden L.) Terisi Carboxymethyl Cellulose dengan Variasi Konsentrasi Gliserol Untuk Menurunkan Susut Bobot Buah Mangga

Fachreza Amri  Batu Bara; Muhammad A. Pratama; Muhammad Hendra S. Ginting; Hamidah Harahap; Nisaul Fadilah  Dalimunthe; Muhammad Thoriq Al Fath

doi:10.32734/jtk.v14i1.18721

Authors

Fachreza Amri Batu Bara Departemen Teknik Kimia, Universitas Sumatera Utara
Muhammad A. Pratama Departemen Teknik Kimia, Universitas Sumatera Utara
Muhammad Hendra S. Ginting Departemen Teknik Kimia, Universitas Sumatera Utara
Hamidah Harahap Departemen Teknik Kimia, Universitas Sumatera Utara
Nisaul Fadilah Dalimunthe Departemen Teknik Kimia, Universitas Sumatera Utara
Muhammad Thoriq Al Fath Departemen Teknik Kimia, Universitas Sumatera Utara

DOI:

https://doi.org/10.32734/jtk.v14i1.18721

Keywords:

cempedak, pectin, biofilm, glycerol, mango

Abstract

Cempedak peel contains 38.85% pectin compounds and has the potential to become biofilm raw material. The characteristics of pectin-based biofilm can be improved by the addition of a glycerol plasticizer. This study aims to determine the effect of variations in glycerol concentration (0%; 3%; 5%; 7% and 9%) on biofilm charactersitics and biofilm application on the shelf life of mango fruit. Pectin was extracted using 5% citric acid at 85°C or 90 minutes. Biofilms were applied on mango fruit for 8 days. Analysis of pectin compounds showed a yield 22.09%; ash content 7.40%; equivalent weight 588.235 mg; methoxyl content 6.20%; galacturonic acid content 36.12%. Analysis of physical properties and biofilm application on mango fruit showed a density value of 2.833 g/mL; water solubility 79.41%; mango weight loss of 33.47%; and a deacrease in vitamin C of 5%. SEM-EDX analysis showed the pectin particles were homogeneous fine grains and dominated by the element of oxygen (O) 88.84%. FTIR analysis of cempedak fruit peel pectin and biofilm showed functional groups of O-H; C-H (methyl); C=O; C-O; C-C.

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