scholarly journals Development and Optimization of Ready to Serve (RTS) Beetroot Drink

2020 ◽  
Vol 39 (01) ◽  
Author(s):  
Atul Dhiman ◽  
Devanshi Chawla ◽  
Dhruv Thakur ◽  
Divya Chauhan ◽  
Chirag Bharara ◽  
...  
Keyword(s):  
Citric Acid ◽  
Chemical Properties ◽  
Black Pepper ◽  
Beetroot Juice ◽  
Ginger Extract ◽  
Physico Chemical ◽  
Evaluation Test ◽  
Original Product ◽  
Life Analysis ◽  
Juice Content

Beetroot is rich in various nutrients. Hence the present study was conducted to develop a ready to serve (RTS) drink using beetroot juice. The juice of beetroot was extracted and added with different concentrations of sugar and citric acid to optimize the best-suited combination of ingredients. Standardization of RTS was done using ranking sensory evaluation test. Two variants of ginger and black pepper flavor were also prepared and standardized. The standardized amount of ingredients after sensory analysis for RTS was found to be 17.7% juice content, 7.5% sugar and 0.1% citric acid. The black pepper variant was standardized at 0.4% black pepper in the original product and the ginger variant standardized at 1.5% ginger extract. The beetroot drink and its variants having an optimized amount of ingredients were analysed for their physico-chemical properties. Shelf life analysis for a period of one month was also carried out.

scholarly journals Green preparation of citric acid cross-linked starch for improvement of physico-chemical properties of Cyperus starch

2019 ◽  
Vol 0 (0) ◽  
pp. 0-0 ◽  
Author(s):  
Bunmi Olayemi ◽  
Christianah Yetunde Isimi ◽  
Kokonne Ekere ◽  
Ajeh Johnson Isaac ◽  
Judith Eloyi Okoh ◽  
...  
Keyword(s):  
Citric Acid ◽  
Chemical Properties ◽  
Physico Chemical

scholarly journals Effect of Modifying Shellac with Citric Acid on Shellac-Bagasse Biocomposite

2019 ◽  
Vol 32 (1) ◽  
pp. 13-16
Author(s):  
Nanik Dwi Nurhayati ◽  
Karna Wijaya ◽  
Triyono ◽  
Eddy Heraldy
Keyword(s):  
Tensile Strength ◽  
Citric Acid ◽  
Intrinsic Viscosity ◽  
Testing Machine ◽  
Chemical Properties ◽  
Low Density ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Physico Chemical ◽  
Mechanical Tensile

This study was aimed at modifying local Shellac with citric acid in varied concentrations of 2, 4, 6, 8 and 10 % (w/w) to prepare Shellac-Bagasse (Sh-Bg) biocomposite and determining its physico-chemical properties. The biocomposite was made from the natural Shellac matrices and Bagasse fibers. Physico-chemical properties of non-modified Shellac and Shellac modified with citric acid including functional groups, intrinsic viscosity, density, and mechanical tensile strength were characterized using Fourier transform infrared spectrometer (FTIR), Oswald viscometer and Universal Testing Machine (UTM). The analysis results showed an optimum modification of shellac-citric acid at a concentration of 4% (w/w). FTIR analysis of the modified Shellac showed a broad absorption at 3448 cm–1 which indicated the presence of hydroxyl groups (-OH). The presence of C=O ester groups was indicated by the absorption appearing at 1712 cm–1. The absorption at 1251-1250 cm–1 indicated the presence of C-O groups, while the presence of -CH2 methylene groups was indicated by the absorption at 1465 cm–1. The modified Shellac with its optimal intrinsic viscosity of 169.97 mL/g indicated that there was a reaction between citric acid and Shellac to form an ester, so that the polymer chains formed were longer with a low density of 0,6662-0,8168 mg/L when compared to Shellac without modification. The low density indicated that the citric acid-modified Shellac could be processed to be biocomposite. The biocomposite was made with various compositions of Shellac and Bagasse with hot press at 80 °C and under a pressure of 6 Kgf/cm2. The optimum ratio of Shellac to Bagasse in Shellac-Bagasse (Sh-Bg) biocomposite was of 60:40 %. While, the analysis using Universal testing machine resulted a mechanical tensile strength of 0.6 MPa and an elongation at break of 0.45 %.

Preparation and physico-chemical properties of hydrogels from carboxymethyl cassava starch crosslinked with citric acid

2014 ◽  
Author(s):  
Sasikan Boonkham ◽  
Kunruedee Sangseethong ◽  
Pathama Chatakanon ◽  
Chalida Niamnuy ◽  
Kiyohiko Nakasaki ◽  
...  
Keyword(s):  
Citric Acid ◽  
Chemical Properties ◽  
Cassava Starch ◽  
Physico Chemical

Physico-chemical Properties of Black Pepper Starch

1983 ◽  
Vol 35 (6) ◽  
pp. 189-192 ◽  
Author(s):  
U. Ramadas Bhat ◽  
R. N. Tharanathan
Keyword(s):  
Chemical Properties ◽  
Black Pepper ◽  
Physico Chemical

scholarly journals PHYSICO-CHEMICAL PROPERTIES OF COMPOSITES ON THE BASE OF CERIA OBTAINED BY A CITRIC ACID METHOD

2019 ◽  
Vol 85 (4) ◽  
pp. 98-109
Author(s):  
Iryna Romanova ◽  
Sviatosla Kirillov
Keyword(s):  
Solid Solution ◽  
Citric Acid ◽  
Low Temperature ◽  
Manganese Oxide ◽  
Solid Solutions ◽  
Chemical Properties ◽  
Specific Area ◽  
Physico Chemical ◽  
Ethanol Combustion ◽  
Temperature Programmed

Composites with the formula nMOx–СеО2, where n is the mole part of copper or manganese oxide have been synthesized via citric acid aided route. Physico-chemical properties of materials obtained are investigated by XRD, low temperature desorption of nitrogen and by temperature-programmed reduction (TPR). It is defined that the composites with the n < 0.25 (for Cu) and < 0.75 (Mn) are the solid solutions obtained by the replacement of cerium ions in the structure of fluorite (СеО2) by copper or manganese ions. The existence of the separate phases of oxides such as CuO and Mn3O4 has been identified in the XRD patterns of composites with formula 0.25CuО–СеО2 and 0.75MnOx–СеО2. The parameters of cell and the particles size for all samples are calculated; decreasing these values occurs due to the solid solutions formation. Specific area of composites obtained is much bigger than specific area of individual oxides; the biggest values are determined for the samples containing the biggest part of copper or manganese oxide. According to TPR profiles of composites themaximal intensity of low temperature peak has the composite 0.25CuО–СеО2 that means the biggest part of the solid solution; so this material is the most active in CO and ethanol combustion. This fact can be explained by appearance of additional oxygen vacancies when ions Ce4+ are replacement by ions with the less oxidation state. The quantities of hydrogen used for reduction of samples with the copper oxide and samples with the manganese oxide with n < 0.5 are much bigger than the theoretical values; in this case the reduction of the part of ceria in the solid solution is happened. The composite 0.25MnOx–CeO2 is the most active in the ethanol combustion; full conversion to CO2 is finished at 205°С. The high activity of individual oxide MnOx and the composite 0.75MnOx–СеО2 in the reaction of toluene oxidation explains by the biggest part of Mn3+ ions in their structure among the all oxides investigated.

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

Physico-Chemical Properties of Recombinant Desulphatohirudin

1990 ◽  
Vol 63 (03) ◽  
pp. 499-504 ◽  
Author(s):  
A Electricwala ◽  
L Irons ◽  
R Wait ◽  
R J G Carr ◽  
R J Ling ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Gel Filtration ◽  
Chemical Properties ◽  
Alpha Helix ◽  
Apparent Molecular Weight ◽  
Correlation Spectroscopy ◽  
Nmr Studies ◽  
Recombinant Hirudin ◽  
Physico Chemical ◽  
Recombinant Molecule

SummaryPhysico-chemical properties of recombinant desulphatohirudin expressed in yeast (CIBA GEIGY code No. CGP 39393) were reinvestigated. As previously reported for natural hirudin, the recombinant molecule exhibited abnormal behaviour by gel filtration with an apparent molecular weight greater than that based on the primary structure. However, molecular weight estimation by SDS gel electrophoresis, FAB-mass spectrometry and Photon Correlation Spectroscopy were in agreement with the theoretical molecular weight, with little suggestion of dimer or aggregate formation. Circular dichroism studies of the recombinant molecule show similar spectra at different pH values but are markedly different from that reported by Konno et al. (13) for a natural hirudin-variant. Our CD studies indicate the presence of about 60% beta sheet and the absence of alpha helix in the secondary structure of recombinant hirudin, in agreement with the conformation determined by NMR studies (17)

Physico-chemical properties of the rare-earth metals, scandium, and yttrium

1963 ◽  
Vol 79 (2) ◽  
pp. 263-293 ◽  
Author(s):  
E.M. Savitskii ◽  
V.F. Terekhova ◽  
O.P. Naumkin
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Chemical Properties ◽  
Physico Chemical ◽  
The Rare Earth
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