scholarly journals Physiognomic and chemical characters in wood as palaeoclimate proxies

2006 ◽  
pp. 175-196 ◽  
Author(s):  
Imogen Poole ◽  
Pim F. van Bergen
Keyword(s):  
Chemical Characters

Further Studies on the Effect of Seed Coat Color on Agronomic and Chemical Characters and Seed Injury in Flax 1

1960 ◽  
Vol 52 (4) ◽  
pp. 210-212 ◽  
Author(s):  
J. O. Culbertson ◽  
V. E. Comstock ◽  
R. A. Frederiksen
Keyword(s):  
Seed Coat ◽  
Coat Color ◽  
Seed Coat Color ◽  
Chemical Characters

scholarly journals Evolution of micromorphological and chemical characters in the lichen-forming fungal family Pertusariaceae

2006 ◽  
Vol 89 (4) ◽  
pp. 615-626 ◽  
Author(s):  
H. THORSTEN LUMBSCH ◽  
IMKE SCHMITT ◽  
DANIEL BARKER ◽  
MARK PAGEL
Keyword(s):  
Chemical Characters

Physical and chemical characters, phytoplankton and primary production of Ezequiel Ramos Mexía Reservoir (Argentina)

Hydrobiologia ◽  
1991 ◽  
Vol 209 (2) ◽  
pp. 107-116 ◽  
Author(s):  
Aldo Mariazzi ◽  
Victor Conzonno ◽  
Ricardo Echenique ◽  
Hector Labollita
Keyword(s):  
Primary Production ◽  
Chemical Characters ◽  
Physical And Chemical

scholarly journals Pharmaceutical Standardization and Physicochemical Characterization of Traditional Ayurvedic Marine Drug: Incinerated Conch Shell (Shankha Bhasma)

Marine Drugs ◽  
2018 ◽  
Vol 16 (11) ◽  
pp. 450
Author(s):  
Sandeep Chavan ◽  
Sonali Tayade ◽  
Vidya Gupta ◽  
Vineeta Deshmukh ◽  
Sadanand Sardeshmukh
Keyword(s):  
Inductively Coupled Plasma ◽  
Aloe Vera ◽  
Physicochemical Characterization ◽  
Optical Emission ◽  
Organic Matrix ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Chemical Characters ◽  
Analytical Tools ◽  
Physical And Chemical

Natural resources such as plants, animals and minerals have always been used by mankind to develop drugs and marine world is no exception. Marine by-products like conches, pearls, mother of pearl shells, corals and so forth have been used by traditional Ayurvedic practitioners for centuries. The unique methods of these preparations are scientifically designed to eliminate unwanted impurities and convert them into bioavailable form. In this study, Conch (Xanchus pyrum) was used as a marine resource of calcium carbonate and was converted pharmaceutically from its aragonite form to calcite. All the steps of preparations and changes in the properties therein were documented and validated. Further, traditional as well as modern analytical tools were used to study its physical and chemical characters to develop a monograph. The physical characterization included particle size, X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TGA) and Fourier Transform Infra-red (FTIR). Metal composition and heavy metal limits were determined using Inductively Coupled Plasma Optical Emission Spectrometry (ICPOES). This study revealed the rearrangement of aragonite crystals into calcite form by grinding, trituration with aloe vera juice and incineration under controlled conditions. Moreover, the finished product was found to be devoid of organic matrix that is nacre. This study creates a foundation for the development of a master formula for commonly used Shankha Bhasma in Ayurvedic medicines.

Molecular data indicate that Rhytidhysteron rufulum (ascomycetes, Patellariales) in Costa Rica consists of four distinct lineages corroborated by morphological and chemical characters

2009 ◽  
Vol 113 (4) ◽  
pp. 405-416 ◽  
Author(s):  
Catalina Murillo ◽  
Federico J. Albertazzi ◽  
Julieta Carranza ◽  
H. Thorsten Lumbsch ◽  
Giselle Tamayo
Keyword(s):  
Costa Rica ◽  
Molecular Data ◽  
Chemical Characters

Four new species of Bryoria (Lichenized Ascomycota: Parmeliaceae) from the Hengduan Mountains, China

Phytotaxa ◽  
2017 ◽  
Vol 297 (1) ◽  
pp. 29 ◽  
Author(s):  
LI SONG WANG ◽  
XIN YU WANG ◽  
DONG LIU ◽  
LEENA MYLLYS ◽  
HAI XIA SHI ◽  
...  
Keyword(s):  
New Species ◽  
Its Sequences ◽  
Hengduan Mountains ◽  
Chemical Characters

Bryoria is one of the most common lichen genera in the Hengduan Mountains; however, due to only preliminary studies in China, species delimitations are poorly known. In this study, thousands of specimens from this region were examined, combined with morphological and chemical characters as well as phylogeny of ITS sequences. Four species of Bryoria are described as new to science: B. barbata, B. fruticulosa, B. wuii and B. yunnana. Consequently, the number of Bryoria species known from this area is increased to 24. Detailed descriptions of the new species and a key to all the known Chinese species are provided.

scholarly journals Gelatin Extraction and Characterization from Femur Bones of Bovine and Porcine with Acid Process

2021 ◽  
Vol 6 (1) ◽  
pp. 32-41
Author(s):  
Purwantiningsih Sugita ◽  
Muhamad Rifai ◽  
Laksmi Ambarsari ◽  
Dyah Utami Cahyaning Rahayu ◽  
Hanhan Dianhar
Keyword(s):  
Amino Acid ◽  
Acid Hydrolysis ◽  
Food Industry ◽  
Physico Chemical ◽  
Halal Food ◽  
Ft Ir ◽  
Acid Process ◽  
Chemical Characters ◽  
Bovine Gelatin ◽  
Hcl Solution

Gelatin has been widely used as an additive in food industry pharmaceutical, and  cosmetic. The similar physical appearance between bovine and porcine gelatin causes an issue for some communities like a Muslim due to awareness of halal food. This study aims to produce gelatin from femur bones of bovines with acid hydrolysis and their characteristics compared to standard gelatin of bovine and porcine. Bovine and porcine bones were soaked in 5% HCl for 10 days and every 2 days a HCl solution was replaced to get ossein. Ossein is hydrolyzed by gradual heating at 65, 75, and 85oC. Gelatin  confirmed by  the physico-chemical characters, FT-IR and analysis amino acid with HPLC.The results showed that the yield of bovine gelatin was 4.33%. The physico-chemical characters of bovine gelatin resulting from isolation and bovine gelatin standards are in conformity with porcine gelatin standards and meet the requirements of SNI 06-3735-1995 and GMIA. Therefore, bovine gelatin is specifically capable of substituting porcine gelatin for application in the pharmaceutical field. The FTIR spectrum of bovine gelatin shows the presence of amide A, amide I, amide II and amide III groups. The amino acid characters of gelatin were identified as glycine (13.57%) and proline (1.62%) for bovine gelatin and glycine (0.51%) and proline (0.09%) for porcine gelatin.

Production of Melanin from Aspergillus fumigatus as an Avirulence Factor

2019 ◽  
Vol 10 (04) ◽  
pp. 651-654
Author(s):  
Anmar Sael Hussein ◽  
Saja Jamal Noman
Keyword(s):  
Ir Spectra ◽  
Aspergillus Fumigatus ◽  
Wave Numbers ◽  
Quantitative Examination ◽  
Wave Range ◽  
The Difference ◽  
Chemical Characters ◽  
Chemical Groups ◽  
High Degree ◽  
Degree Of Similarity

In this quantitative examination of melanin was detected in 41 isolates of fumigatus. It was found that the significance of the difference in which the production of melanin (p ˂ 0.001) was the range of melanin extracted from fumigatus between (1.2 - 3.1 mg/mL). The isolates AFU1, AFU14, AFU29, AFU30, and AFU41 indicated that the maximum production ranged between (2.9-3.1 mg/mL). 2 hours at 100°C. It has similarities with standard melanin characters, and the same chemical characters of melanin extracted from the hymen of Bjerkandara adusta have been achieved according to a study (14) meaning there is similarity with standard melanin. The overlay of IR spectra of synthetic melanin extracted from fungal cultures showed a high degree of similarity. Purification of melanin from A. fumigatus. Wave numbers shown in 3381, 2927, 1867, 1531, 1404, 1073 and 651 cm-1 The wave range can be traced to the following chemical groups: 3381 cm-1 attributed to OH bonds, 2927 cm-1 to HC or HC = 0 bonds 1404 (C-CH3), and 651 cm -1 to (acyclic) CH2 bonds.

Evaluation of Coleus forskohlii Genotypes for Bio Chemical Characters

2009 ◽  
Vol 3 (2) ◽  
pp. 75-79 ◽  
Author(s):  
C. Kavitha ◽  
E. Vadivel ◽  
K. Rajamani
Keyword(s):  
Coleus Forskohlii ◽  
Chemical Characters

scholarly journals Discovery of Novel Conotoxin Candidates Using Machine Learning

Toxins ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 503 ◽  
Author(s):  
Qing Li ◽  
Maren Watkins ◽  
Samuel Robinson ◽  
Helena Safavi-Hemami ◽  
Mark Yandell
Keyword(s):  
Machine Learning ◽  
De Novo ◽  
Current Reference ◽  
Marine Snails ◽  
Rnaseq Data ◽  
Venom Glands ◽  
Reference Databases ◽  
Conus Venom ◽  
Chemical Characters ◽  
Drug Leads

Cone snails (genus Conus) are venomous marine snails that inject prey with a lethal cocktail of conotoxins, small, secreted, and cysteine-rich peptides. Given the diversity and often high affinity for their molecular targets, consisting of ion channels, receptors or transporters, many conotoxins have become invaluable pharmacological probes, drug leads, and therapeutics. Transcriptome sequencing of Conus venom glands followed by de novo assembly and homology-based toxin identification and annotation is currently the state-of-the-art for discovery of new conotoxins. However, homology-based search techniques, by definition, can only detect novel toxins that are homologous to previously reported conotoxins. To overcome these obstacles for discovery, we have created ConusPipe, a machine learning tool that utilizes prominent chemical characters of conotoxins to predict whether a certain transcript in a Conus transcriptome, which has no otherwise detectable homologs in current reference databases, is a putative conotoxin. By using ConusPipe on RNASeq data of 10 species, we report 5148 new putative conotoxin transcripts that have no homologues in current reference databases. 896 of these were identified by at least three out of four models used. These data significantly expand current publicly available conotoxin datasets and our approach provides a new computational avenue for the discovery of novel toxin families.

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