MODIFIKASI PATI UBI UWI (Dtoscorea alata L) DALAM PEMBUATAN FILM PELAPIS YANG BERSIFAT RAMAH LINGKUNGAN

YUSTIANI, WIWIN and Miksusanti, Miksusanti and Herlina, Herlina (2011) MODIFIKASI PATI UBI UWI (Dtoscorea alata L) DALAM PEMBUATAN FILM PELAPIS YANG BERSIFAT RAMAH LINGKUNGAN. Undergraduate thesis, Sriwijaya University.

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Abstract

The research about modification uwi strarch (Dioscorea alata L) by using propylene oxide has been done. Concentration of propylene oxide were 6%(v/w), 8%(v/w), and 10%(v/w). The amilograf parameter after modification were characteristic breakedown viscosity 43 BU and setback viscosity 975 BU. The modification starch have edible properties according to FDA (food and drug administration) which have degree of modification < 7%, degree of substitution <0,1 and propilen oxide concentration < 10%(v/w). The best propylene oxide in making of edible film 8%(v/w). The starch control can be made into edible film with thickness 0,136 mm, tensile strength 20,4605 N/mm2 and elongation 22%. Modification starch of uwi can be made into edible film with thickness 0,146 mm, tensile strength 25,3521 N/mm2, elongation 30% and water vapor transmission 7,2651 g/m2/24 hours. Edibel film from modification uwi starch when compared with film edibel from tapioca starch will have a thicker film thickness and percent elongation smaller but the resulting film has a greater tensile strength and has a water vapor transmission value are relatively similar, where film from tapioca starch has a thickness of 0.120 mm, elongation 72,9 %, tensile strength 6,97 N/mm2 and water vapor transmission 8,79 g/m2/24 hours. This film also included in the grade 7 for water vapor transmission and grade 8 for tensile strength and percent elongation when compared with the Standard of the Japanese Industrial Standard (1975)

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Pati ubi uwi (Dioscorea alata L.), Propilen oksida
Subjects:	Q Science > QD Chemistry > QD241-441 Organic chemistry
Divisions:	08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1)
Depositing User:	Mrs Furika Furika
Date Deposited:	12 May 2022 02:40
Last Modified:	12 May 2022 02:40
URI:	http://repository.unsri.ac.id/id/eprint/69852

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