PRESISI DAN AKURASI KROMATOGRAFI GAS DALAM PENETAPAN KADAR ASAM PROPIONAT DALAM PRODUKSI BAKERI (PRECISION AND ACCURACY OF GAS CHROMATOGRAPHY FOR DETERMINATION OF PROPIONIC ACID LEVELS IN BAKERY PRODUCT)
DOI:
https://doi.org/10.26418/indonesian.v4i2.45415Abstract
Percission and accurate gas chromatographic method for determination
of propionic acid in bakery products was developed. Bakery products
were directly extraction with ethyl acetat and phosphoric acid used for
acidic. The extract was injected directly to gas chromatographic using
butyric acid as internal standard. Calibration curve propionic acid range
25 "“ 1000 µg/mL. Coefissien of variation (CV) rates for spiked bakery
produtcs were 1,36% and 99,81% (range 96,32 "“ 103,61%) for accuracy
at ± 1000 mg/kg propionic acid, Limit detection (LoD) and limit
quantitation (LoQ) by this method were 333,6537 mg/Kg and 635,5818
mg/Kg. Burger, hot dog, and sandwich buns from a local factory at
Pontianak were analyzed and respectively rates less than the limit
permitted by Indonesian regulations.
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