Optimasi Peningkatan Kadar Glukomanan dan Penurunan Kalium Oksalat pada Proses Penepungan dari Chip Porang (Amorphophallus oncophyllus) dengan Metode Mekanis

Faridah, Anni and Widjanarko, Simon Bambang and Sutrisno, Aji (2011) Optimasi Peningkatan Kadar Glukomanan dan Penurunan Kalium Oksalat pada Proses Penepungan dari Chip Porang (Amorphophallus oncophyllus) dengan Metode Mekanis. In: Peran Teknologi dalam Pengembangan Pangan yang Aman, Bermutu dan Terjangkau Bagi Masyarakat, 15-17 September 2011, Sulawesi Utara.

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Abstract

Porang Tuber (Amorphophallus oncophyllus) has high Glucomanan content which is very useful in food and non food industry as well as in medical industry. The only main problem in development of porang flour is that due to limitation of glucomanan and its Calcium Oxalate content that stipulates irritation (itchiness) and health disorder. Optimization study of diminution (reduction) content of Calcium Oxalate during mechanical grinding process using stamp mill and cyclon fractionation was performed by applying Response Surface Model (RSM), central composite model. Three variables i.e. weight of porang chip, grinding time and grinding speed were studied in order to study the Calcium Oxalate content as a response. Response model obtained was quadratic which was acquired at 1.29 kg porang optimum weight; grinding time 15,24’,36’’; and grinding speed at 18,18 rpm. Optimum glucomannan and calcium oxalate content have been predicted respectively at 68,0092% and 0,1942 % which was 67,5% and 0,25% in actual.

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