Growth of Rhizopus microsporus UICC 500, UICC 531, and UICC 539 on the palm oil processing waste

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Abstract

Palm oil slurry and palm kernel cake are the products of oil processing waste. This study aims to investigate the ability of three strains of Rhizopus microsporus (UICC 500, UICC 531 and UICC 539) to grow and ferment the non-sterile and sterile slurry and kernel cake mixtures (3:1). The total weight of the waste mixtures was 20 g with inoculum concentration of 10% (v/w), and the initial cell number was 1 × 107 CFU/mL. Fermentation was carried out for five days at 28°C. Only Rhizopus microsporus UICC 539 was able to grow and ferment on both the non-sterile and sterile mixtures. Rhizopus microsporus UICC 500 and UICC 531 were able to grow and ferment only on sterile mixtures. On the sterile mixtures, Rhizopus microsporus UICC 539 showed the fastest growth and attained the highest cell number (1.77 × 108 CFU/mL), followed by Rhizopus microsporus UICC 531 (1.35 × 108 CFU/mL), and Rhizopus microsporus UICC 500 (1.3 × 108 CFU/mL). This study showed that all R. microsporus strains have the ability to grow and ferment agro-industrial waste such as palm oil processing waste. Rhizopus microsporus UICC 539 is a potential strain to ferment non-sterile and sterile mixtures of slurry and palm kernel cake. Further study is required to determine the effect of fermentation by R. microsporus on the nutrient content of palm oil waste.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
EditorsRatna Yuniati, Terry Mart, Ivandini T. Anggraningrum, Djoko Triyono, Kiki A. Sugeng
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735417410
DOIs
Publication statusPublished - 22 Oct 2018
Event3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017 - Bali, Indonesia
Duration: 26 Jul 201727 Jul 2017

Publication series

NameAIP Conference Proceedings
Volume2023
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium on Current Progress in Mathematics and Sciences 2017, ISCPMS 2017
CountryIndonesia
CityBali
Period26/07/1727/07/17

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