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All Journal Gontor AGROTECH Science Journal
Endaruji Sedyadi
UIN Sunan Kalijaga Yogyakarta
Agriculture, Biological Sciences & Forestry Education

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Effect of Additional Markisa Rind Pektin on The Mechanical Properties of Biodegradable Plastic Garut Starch Dwiana Pratiwi; Endaruji Sedyadi
Gontor AGROTECH Science Journal Vol 6, No 3 (2020): Special issue Seminar Nasional Sains dan Teknologi (SNST) 2020
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v6i3.4923

Abstract

plastics. The manufacture of biodegradable plastics from starch arrowroot  with addition of pectin passion fruit's rind and glycerol plasticizer has been done. This study aimed to understand the impact of the addition of pectin passion fruit’s rind on the mechanical properties of the biodegradable plastic. Biodegradable plastic characterized by its mechanical properties include thickness, tensile strength, elongation, and young modulus. The variations of the pectin passion fruit's rind used were 0, 1, 2, 3, and 4 grams. The results showed that the addition of pectin passion fruit’s rind tended to lose tensile strength, but increased elongation of biodegradable plastic. The highest elongation was 16.6657% with the addition of 3 grams of pectin passion fruit's rind, but decreased the tensile strength by 4.5602 Mpa
Effect of Addition Bali Orange Peel Pectins on The Mechanical Properties of Garut Starch Bioplastic Sholekhahwati Sholekhahwati; Endaruji Sedyadi
Gontor AGROTECH Science Journal Vol 6, No 3 (2020): Special issue Seminar Nasional Sains dan Teknologi (SNST) 2020
Publisher : University of Darussalam Gontor, Ponorogo, East Java Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/agrotech.v6i3.4927

Abstract

Research has been conducted on the effect of adding grapefruit peel pectin on the physical properties of glycerol plasticized arrowroot starch bioplastic. This study aims to determine the effect of adding grapefruit peel pectin to its mechanical properties including thickness, tensile strength, elongation, and modulus young. Variations of grapefruit peel pectin used were 0, 1, 2, 3, 4, and 5 g. Bioplastics are made using hot blending methods. The results showed that the addition of grapefruit pectin could increase the thickness value, decrease the tensile strength value, increase the elongation value, and decrease the young modulus. The optimum results obtained are with a thickness value of 0.156 mm, a tensile strength value of 3.9882 MPa, an elongation value of 10.5499%, and a modulus young value of 0.3765 MPa. Overall, it can be concluded that the addition of grapefruit peel pectin has a significant effect on the mechanical properties of glycerol plasticized arrowroot starch bioplastic. 
Co-Authors Dwiana Pratiwi Sholekhahwati Sholekhahwati