Modification of poovan banana (MusaAAB) starch by γ-irradiation: effect onin vitrodigestibility, molecular structure and physico-chemical properties

2015 ◽  
Vol 50 (8) ◽  
pp. 1778-1784 ◽  
Author(s):  
Chagam Koteswara Reddy ◽  
Puthan Veettil Vidya ◽  
Korambeth Vijina ◽  
Sundaramoorthy Haripriya
Symmetry ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 320 ◽  
Author(s):  
Young Kwun ◽  
Abaid Virk ◽  
Waqas Nazeer ◽  
M. Rehman ◽  
Shin Kang

The application of graph theory in chemical and molecular structure research has far exceeded people’s expectations, and it has recently grown exponentially. In the molecular graph, atoms are represented by vertices and bonds by edges. Topological indices help us to predict many physico-chemical properties of the concerned molecular compound. In this article, we compute Generalized first and multiplicative Zagreb indices, the multiplicative version of the atomic bond connectivity index, and the Generalized multiplicative Geometric Arithmetic index for silicon-carbon Si2C3−I[p,q] and Si2C3−II[p,q] second.


Author(s):  
Young Chel Kwun ◽  
Abaid ur Rehman Virk ◽  
Waqas Nazeer ◽  
Shin Min Kang

The application of graph theory in chemical and molecular structure research far exceeds people's expectations, and it has recently grown exponentially. In the molecular graph, atoms are represented by vertices and bonded by edges. Closed forms of multiplicative degree-based topological indices which are numerical parameters of the structure and determine physico-chemical properties of the concerned molecular compound. In this article, we compute and analyze many multiplicative degree-based topological indices of silicon-carbon Si2C3-I[p,q] and Si2C3-II[p,q].


2018 ◽  
Vol 316 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Érica Amanda de Barros ◽  
Vladimir Eliodoro Costa ◽  
Dayanne Fabrício Bressan ◽  
Renata Bruna dos Santos Coscolin ◽  
Rogério Lopes Vieites ◽  
...  

2019 ◽  
Vol 30 ◽  
pp. 08006
Author(s):  
Alexandr Kazak ◽  
Margarita Marchenkova ◽  
Antonina Smirnova ◽  
Tatiana Dubinina ◽  
Alexey Seregin ◽  
...  

In order to establish the effect of the molecular structure of mix-substituted phthalocyanine derivatives on its supramolecular organization in thin-films, the floating layers of three A3B-type phthalocyanine derivatives were obtained. Their supramolecular organization was determined and it was found that the studied compounds form homogeneous stable floating layers on the water surface. Structure parameters of floating layers depend both on the length of aliphatic substituents (R = CnH2n+1) and the metal complexing agent. Ligands I and II form stable monolayer structures, which the layer packing periods increase with the elongation of aliphatic substituents: the lattice parameter (d) is 1.93 and 2.3 nm for ligands I (n = 6) and II (n = 8), correspondingly. During further compression of the formed monolayers, ligands I and II form stable bilayers, in which the arrangement of molecules remains similar to the structure of the previous monolayers. These bilayers contain minor inclusions of 3D aggregates. Metal complex III forms only stable monolayer (d = 2.06 nm), upon further compression of which 3D- aggregates included in the monolayer are formed.


1971 ◽  
Vol 9 (6) ◽  
pp. 1779-1783 ◽  
Author(s):  
Kh. U. Usmanov ◽  
A. A. Yulchibaev ◽  
T. Sirlibaev

2002 ◽  
Vol 21 (1-2) ◽  
pp. 117-123 ◽  
Author(s):  
R Pushkareva ◽  
E Kalinichenko ◽  
A Lytovchenko ◽  
A Pushkarev ◽  
V Kadochnikov ◽  
...  

2016 ◽  
Vol 12 (6) ◽  
pp. 557-565 ◽  
Author(s):  
Chagam Koteswara Reddy ◽  
Lalmuan Kimi ◽  
Sundaramoorthy Haripriya

Abstract Starches isolated from three different pigmented rice varieties (Chak-hao Amubi, Chak-hao Poireiton, and Chak-hao Angangba) and investigated for their molecular structure and physico-chemical properties including amylose content, morphology, crystallinity, pasting viscosity, color, thermal property, swelling power and solubility. Significant differences were detected in physico-chemical and functional properties (p≤0.05) of rice starches. The amylose content results revealed that Chak-hao Angangba (1.93 %) and Chak-hao Poireiton (1.98 %) are waxy rice, and Chak-hao Amubi (3.16 %) is a very low-amylose rice. The morphology of rice starch granules shown polyhedral edges with an irregular shape; and the XRD patterns of rice starches exhibited A-type crystalline patterns with peaks at 2θ=15.1°, 17.1°, 18.2° and 23.0°. Waxy rice starches shown higher peak viscosity and enthalpy with lower gelatinization temperatures than very low amylose rice starches. The pasting viscosity, swelling power and solubility crystallinity of rice starches were varied significantly (p≤0.05). Finally, the present study provides knowledge for the utilization of starches isolated from three pigmented rice varieties grown in North-Eastern part of India that would be relevant for both domestic and industrial applications.


2003 ◽  
Vol 68 (7) ◽  
pp. 549-555 ◽  
Author(s):  
Ivan Gutman ◽  
Biljana Arsic ◽  
Boris Furtula

Let n1(e|T) and n2(e|T) denote the number of vertices of a tree T, lying on the two sides of the edge e. Let T1 and T2 be two trees with equal number of vertices, let e be an edge of T1 and f an edge of T2. Then e and f are said to be equiseparable if either n1(e|T1) = n1(f|T2) or n1(e|T1) = n2(f|T2). If all edges of T1 and T2 can be chosen so as to form equiseparable pairs, then T1 and T2 are equiseparable trees. A number of molecular structure-descriptors of equiseparable chemical trees coincide, implying that the corresponding alkane isomers must have similar physico-chemical properties. It is shown how equiseparable chemical trees can be constructed in a systematic manner. .


Sign in / Sign up

Export Citation Format

Share Document