http://irug.org/search-spectral-database Webb24 jan. 2024 · Starch slurry (6% in distilled water) was completely gelatinized (95°C, 20 min). This starch paste was cooled to room temperature and centrifuged (1000×g, 15 min). The percentage of water separated after each freeze-thaw cycle (21 h at -20°C and 3 h at room temperature) was calculated. 2.4.
(PDF) How Glycerol and Water Contents Affect the Structural and ...
WebbFTIR spectrum of potato starch before and after pasting showing characteristic peaks. The peak between 3800 and 3000 cm −1 represents O-H bond stretching, while the peaks at … Webb30 mars 2016 · Starch has a heterogeneous, semi-crystalline granular structure and the degree of ordered structure can affect its behaviour in foods and bioplastics. A range of … hogan offerte donna
Infrared spectroscopy as a tool to characterise starch …
FTIR spectra of starches were recorded in a JASCO FTIR 4100 spectrophotometer in the range of 4000–400 cm−1, at a resolution of 2 cm−1using the potassium bromide (KBr) pellets technique at room temperature. Background and sample spectra were obtained from 64 scans. About 5 mg of finely ground solid sample … Visa mer Thirteen independent, commercial and seed-isolated starch samples were used as raw materials (Table 1). Potato starch (Pp) was supplied by Prosecor Ltda. and obtained from … Visa mer All starch samples were placed for 1 week in a desiccator at room temperature to reduce and maintain a constant moisture content. The moisture content was determined gravimetrically by calculating the weight loss after … Visa mer The processing of FTIR spectra and XRD patterns of starches were conducted using R, CRAN version 3.3.1 [22]. The FTIR spectra were truncated between 4000 and 800 cm−1 and smoothed by applying the Savitzky-Golay filter … Visa mer X-ray diffraction measurements of starch were carried out using a Bruker Endeavour diffractometer (model D4/max-B, Germany) with Cu Kα radiation (40 kV and 20 mA). The scanning … Visa mer WebbPada penelitian ini telah dilakukan isolasi dan karakterisasi pati dari limbah biji salak. Pati diisolasi dari biji salak dengan menggunakan dua metode yang berbeda yaitu metode 1: blend - perlakuan basa - bleaching dan metode 2: “perlakuan basa- bleaching -alkohol”. Pati yang diisolasi dengan menggunakan metode 1 dan metode 2 berturut ... Webb29 aug. 2013 · Thermal oxidation degradation of high-amylose (80 %) cornstarch has been studied using thermogravimetry analyser coupled to Fourier transform infrared spectroscopy (TG-FTIR). The linear structure of amylose provides a modal material to understand how the starch microstructure affects on the decomposition mechanisms. … hogan offerte