PEMANFAATAN MINYAK GORENG BEKAS UNTUK PEMBUATAN SABUN : KAJIAN LAMA PENYABUNAN DAN KONSENTRASI DEKSTRIN
ABSTRACT: The research was
aimed to find out the best treatment in the making of soap from used frying oil
and to analyze its financial feasibility. A randomized factorial block design
was used in the experiment. The soap was made by saponifying at various length
of time (30; 45, and 60 minutes) and dextrin concentrations of 1 %; 2.5 %; 4 %
respectively. The yields as
well as some
characteristics of the
soap, namely moisture
content, the level of free
alkali, pH, texture, and middle length of the foam were determined. A sensory evaluation
was also performed on the colour and texture of the soap. A financial analysis was carried
out to determine
the values of
Break Even Point
(BEP), Payback Period,
and Return of Investment
(ROI) on the
manufacturing of the
selected method of
soap production.
It was found that the best soap was obtained by applying a 30 minutes
saponification process combined with the use of 1% dextrin with the soap yield
of 87.51% and having the following
characteristics: moisture content
7.31 %, free alkali
content 0.1279 %, pH 10.4, the
texture 0.0007 mm/g.sec.,
and the foam’s
middle length of
2.15 cm. However,
the panelists tends to be like nor dislike to the colour and texture of
the product. The value of BEP is 50,387
units at a
value of Rp.13,574,333.00, which
was equivalent with a
production capacity of 45 kg/day. The respective values of Payback Period and
ROI were 50 months (4 years and 2 months) and 18.49 %.
Key words: used frying oil,
soap, saponification, dextrin
Penulis: Susinggih Wijana,
Siti Asmaul Mustaniroh dan Indha Wahyuningrum
Kode Jurnal: jppertaniandd050040
