Pengaruh Lama Pencucian Terhadap Kadar Vitamin B1 Pada Beras Putih Dan Beras Merah Secara Spektrofotometer Visibel
Abstrak: A research about
analysis of vitamin B1 on the effeccts of long leaching on levels of vitamin B1
on white rice and red rice using UV-Visible spectrophotometry. Vitamin B1
reacted with bromthymol blue for compose ion-association complex. For improve
solubility of Vitamin B1 complex compounds with bromthymol blue be added
polivinyl alcohol as a solubilization substance, and added amonia buffer as pH
buffer, that measured with wavelength of maximum absorbance was 431,0 nm.
Average (%) Vitamin B1 level of white rice after leaching minutes 1 is 0,0166.
Average vitamin B1 level of red rice after leaching minutes 1 is 0,0262. The highest
level of vitamin B1 from the white rice and red rice was found on minute 1
after leaching. From the statistical analysis one way ANOVA using SPSS 17
program found a significant difference (p<0,05) from each sample.
Kata Kunci: Vitamin B1; white
ric; red rice; spectrofotometer visible
Penulis: Roslinda Rasyid,
Anisa Nurul Fitria, Humaira Fadhilah
Kode Jurnal: jpfarmasidd140521
