Two new 12-membered macrolides from the endophytic fungal strain Cladosprium colocasiae A801 of Callistemon viminalis

2018 ◽  
Vol 21 (7) ◽  
pp. 696-701 ◽  
Author(s):  
Hong-Xin Liu ◽  
Hai-Bo Tan ◽  
Sai-Ni Li ◽  
Yu-Chan Chen ◽  
Hao-Hua Li ◽  
...  
Keyword(s):  
Fungal Strain ◽  
Callistemon Viminalis

SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL EVALUATION OF 3-FORMYL INDOLE BASED SCHIFF BASES

2018 ◽  
Vol 7 (6) ◽  
Author(s):  
Singh Gurvinder ◽  
Singh Prabhsimran ◽  
Dhawan R. K.
Keyword(s):  
Antimicrobial Activity ◽  
Spectral Analysis ◽  
Schiff Bases ◽  
Antimicrobial Agents ◽  
Biological Evaluation ◽  
Fungal Strain ◽  
Bacterial Strains ◽  
Standard Drug ◽  
Gram Negative ◽  
E Coli

In order to develop new antimicrobial agents, a series of 3-formyl indole based Schiff bases were synthesized by reacting 3-formyl indole(indole-3-carboxaldehyde) with substituted aniline taking ethanol as solvent. The reaction was carried in the presence of small amount of p-toluene sulphonic acid as catalyst.All the synthesized compounds were characterized by IR, 1H-NMR spectral analysis. All the synthesized compounds were evaluated for antimicrobial activity against two gram positive bacterial strains (B. subtilisand S. aureus) and two gram negative bacterial strains (P. aeruginosaand E. coli) and one fungal strain (C. albicans). All the synthesized compounds were found to have moderate to good antimicrobial activity. The  standard drug amoxicillin, fluconazole were used for antimicrobial activity. Among the synthesized compounds, the maximum antimicrobial activity was shown by compounds GS04, GS07, GS08 and GS10.

scholarly journals Eco-Friendly Reduced Graphene Oxide Nanofilter Preparation and Application for Iron Removal

Separations ◽  
2021 ◽  
Vol 8 (5) ◽  
pp. 68
Author(s):  
Pankaj Kumar Jha ◽  
Watsa Khongnakorn ◽  
Chamorn Chawenjkigwanich ◽  
Md Shahariar Chowdhury ◽  
Kuaanan Techato
Keyword(s):  
Contact Angle ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Inductively Coupled Plasma ◽  
Membrane Filter ◽  
Water Flux ◽  
Water Filtration ◽  
Dimethyl Formamide ◽  
Reduced Graphene ◽  
Callistemon Viminalis

In this paper, the green synthesis of reduced graphene oxide (r-GO) nanomaterials using Callistemon viminalis leaf extract as a reducing and stabilizing agent is reported for the first time. The synthesized r-GO nanomaterials were characterized using UV–Vis, XRD, FE-SEM, TEM, and energy dispersive X-ray (EDX) analyses. The nanofilter membrane was prepared by varying the amounts of r-GO nanomaterials in a Polysulfone-N,N-dimethyl formamide (DMF) solution. The nanofilter membrane was characterized by the contact angle, atomic force microscopy (AFM), UV–Vis, and FTIR. The results confirm the formation of r-GO nanomaterials. Higher amounts of r-GO nanomaterials in the membrane show a lower contact angle, thus confirming their hydrophilic nature. Iron water filtration was performed with different amounts of r-GO nanomaterials in the membrane filter, and the water flux was smooth over an increased time period. Inductively Coupled Plasma (ICP) analysis showed a higher percentage of iron rejection (95.77%) when higher amounts (0.10 g) of r-GO nanomaterials were used in a mixed membrane (i.e., sample C). In conclusion, the findings illustrate that Callistemon viminalis mediates the synthesis of r-GO nanomaterials, which is useful in water filtration, and can be incorporated into membrane filters, since it removes iron.

scholarly journals Chemical Investigations Into the Biosynthesis of the Gymnastatin and Dankastatin Alkaloids

2021 ◽  
Author(s):  
Bingqi Tong ◽  
Bridget Belcher ◽  
Daniel Nomura ◽  
Thomas Maimone
Keyword(s):  
Natural Products ◽  
Protein Function ◽  
Bond Formation ◽  
Covalent Bond ◽  
Fungal Strain ◽  
Fertile Ground ◽  
Covalent Bond Formation

Electrophilic natural products have provided fertile ground for understanding how nature inhibits protein function using covalent bond formation. The fungal strain Gymnascella dankaliensis has provided an especially interesting collection of...

ChemInform Abstract: New Antibacterial Isocoumarin Glycosides from a Wetland Soil Derived Fungal Strain Metarhizium anisopliae.

ChemInform ◽  
2016 ◽  
Vol 47 (26) ◽  
Author(s):  
Jie-Feng Tian ◽  
Peng-Ju Li ◽  
Xiao-Xia Li ◽  
Ping-Hua Sun ◽  
Hao Gao ◽  
...  
Keyword(s):  
Metarhizium Anisopliae ◽  
Fungal Strain ◽  
Wetland Soil

scholarly journals Callistemenonone A, a novel dearomatic dibenzofuran-type acylphloroglucinol with antimicrobial activity from Callistemon viminalis

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Yu-Qing Xiang ◽  
Hong-Xin Liu ◽  
Li-Yun Zhao ◽  
Zhi-Fang Xu ◽  
Hai-Bo Tan ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Callistemon Viminalis

ChemInform Abstract: Determination of the Absolute Stereostructure of seco-Macrosphelide E Produced by a Fungal Strain from a Sea Hare

ChemInform ◽  
2010 ◽  
Vol 33 (32) ◽  
pp. no-no
Author(s):  
Hiroshi Nakamura ◽  
Machiko Ono ◽  
Takeshi Yamada ◽  
Atsushi Numata ◽  
Hiroyuki Akita
Keyword(s):  
Fungal Strain ◽  
Sea Hare ◽  
The Absolute

scholarly journals CRM-51006, a New Phospholipase C (PLC) Inhibitor, Produced by Unidentified Fungal Strain MT51005

2004 ◽  
Vol 57 (12) ◽  
pp. 808-811 ◽  
Author(s):  
WON KEUN OH ◽  
HYUNCHEOL OH ◽  
BO YEON KIM ◽  
BEOM SEOK KIM ◽  
JONG SEOG AHN
Keyword(s):  
Phospholipase C ◽  
Fungal Strain

Morphophysiological studies of the shoot apex. I. Recurrent growth flushes and their relationship with structural changes in the growing apex of Callistemon viminalis

1968 ◽  
Vol 46 (10) ◽  
pp. 1287-1295 ◽  
Author(s):  
A. N. Purohit ◽  
K. K. Nanda
Keyword(s):  
Structural Changes ◽  
Rest Period ◽  
Growth Cycle ◽  
Active Period ◽  
Active Growth ◽  
Histological Changes ◽  
Floral Buds ◽  
Rest Periods ◽  
Number Of Leaves ◽  
Callistemon Viminalis

The annual growth cycle of Callistemon viminalis consists of three phases: (1) a reproductive phase that continues till the end of February; (2) a vegetative phase that lasts from the end of February till the end of August; and (3) a long dormant phase which lasts till the end of December. The cycle exhibits four growth flushes with alternating periods of active growth and rest. The duration of the successive rest periods increases, leading eventually to the onset of the long dormant phase.The growing apex exhibits more or less similar histological changes in different growth flushes. An increase in divisional activity of the cells of flanking meristem, accompanied by a decline in the elongation of cells of pith rib meristem, characterizes the rest period. During the active period of growth, the cells of the pith rib meristem elongate but the activity of the flanking meristem decreases. The number of leaves produced in each growth flush, therefore, is dependent upon the duration of the preceding rest period, and their size and nature on the duration of active growth. In growth flush 1 the cells of the rib meristem show elongation twice during the active period corresponding with the separation of floral buds and of foliage leaves respectively. In the long dormant phase, on the other hand, the cells of the flanking meristem show high divisional activity twice, first during September when new leaf primordia are initiated, and again during November when floral buds are initiated. Events of great significance thus occur during the long dormant phase. The reproductive development is characterized by a marked increase in the rate of cell division in the flanking meristem accompanied by cessation of growth, the features that characterize the rest period as well.

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