Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : agriTECH

Structural Changes in Cooked Rice Treated with Cooling-Reheating Process and Coconut Milk Addition as Observed With FT-IR and 13C NMR Nuri Arum Anugrahati; Yudi Pranoto; Yustinus Marsono; Djagal Wiseso Marseno
agriTECH Vol 37, No 1 (2017)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (843.527 KB) | DOI: 10.22146/agritech.10669

Abstract

The molecular structural changes of food could be observed by the technique of FT-IR and 13C NMR spectroscopy. This research was aimed to study the structural changes in cooked rice treated with cooling-reheating process and coconut milk addition using FT-IR and 13C NMR. It was found that the cooling-reheating process and addition of coconut milk cause several structural changes of cooked rice. The IR analysis showed the bands at 3,400, 2,900, 1,018 and 856 cm-1 changed due to the retrogradation during cooling process. The spectrum of 13C NMR showed the change of peaks at 100.28 and 100.10 ppm. These changes may be related to the addition of coconut milk during rice cooking.
Potensi DNA Sebagai Penguat Flavor Nuri Arum Anugrahati; C. Hanny Wijaya; Safir Abadi
agriTECH Vol 23, No 3 (2003)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1674.145 KB) | DOI: 10.22146/agritech.13506

Abstract

The application of DNA in food product is still limited. Meanwhile, nucleotides such as IMP and GMP have been widely used as flavour enhancer. The objectives of this research was to study the potency of DNA as a flavour enhancer. Firstly, the phsyco-chemical properties of single-stranded DNA were determined. The next step was the determination of treshold value using trained panels. Formulation of flavour enhancer premix and seasoning were also conducted in this research based on previous result. DNA was soluble in water and base solution. The viscosity of DNA solution was stable to oxygen exposure, but unstable to heat and light exposure. The water, ash, protein, fat, and carbohydrate content of single stranded DNA were 6.37%, 25.20%. 48.58%, 0.1%, and 19.75%, respectively as wet basis. DNA and MSG have shown synergistic effect. The ratio of MSG and DNA premix, which had the best organoleptic properties was 95:5, according to hedonic test result, the optimum formula for seasoning was 1 g of salt, 1 g of flavour enhancer premix, 1 g sugar, 0.8 g of garlic powder, and 0.4 g of pepper