scholarly journals A Brief Review On: Extraction of Natural Dyes from Barks of Mangrove and Walnut Tree and their Applications

2020 ◽  
Vol 9 (11) ◽  
pp. 669-673
Author(s):  
Vivek Murani ◽  
Kumar Joshi ◽  
Kuldeep R. Sharma ◽  
Archit Dave
Keyword(s):  
Natural Dyes ◽  
Walnut Tree

Potential new sources of natural dyes from the traditional pharmacopoeia of New-Caledonia

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
M Toussirot ◽  
E Hnawia ◽  
D Cardon ◽  
W Nowik ◽  
A de la Sayette ◽  
...  
Keyword(s):  
New Caledonia ◽  
Natural Dyes ◽  
Traditional Pharmacopoeia

Linear and Nonlinear Optical Properties of Natural Dyes Freestanding Films and Application in Optical Limiting

2020 ◽  
pp. 139-143
Keyword(s):  
Absorption Coefficient ◽  
Water Solution ◽  
Optical Limiting ◽  
Refraction Index ◽  
Laser Wavelength ◽  
Solid State Laser ◽  
Natural Dyes ◽  
Linear And Nonlinear ◽  
532 Nm ◽  
Absorbance Spectra

Natural dyes were followed and prepared from a pomegranate, purple carrot, and eggplant peel. The absorbance spectra was measured in the wavelength range 300-800 nm. The linear properties measurements of the prepared natural dye freestanding films were determined include absorption coefficient (α0), extinction coefficient (κ), and linear refraction index (n). The nonlinear refractive index n2 and nonlinear absorption coefficient β2 of the natural dyes in the water solution were measured by the optical z-scan technique under a pumped solid state laser at a laser wavelength of 532 nm. The results indicated that the pomegranate dye can be promising candidates for optical limiting applications with significantly low optical limiting of 3.5 mW.

Colour Study in CIELAB Space on Natural Colorants from Vaccinium Vitis - Idaea Fruits

2008 ◽  
Vol 59 (10) ◽  
Author(s):  
Simona Popa ◽  
Mariana Pop ◽  
Alfa Xenia Lupea ◽  
Violeta Turcu
Keyword(s):  
Food Industry ◽  
Natural Dyes ◽  
Natural Colorants ◽  
Cielab System

It is very important for food industry to use ecological additives and adjuvants such as natural dyes extracted from plants. The paper presents a study regarding colour and colouring properties of the natural, non � toxic dye extracted from fresh fruits of cranberry (Vaccinium vitis-idaea) water extracted. Colours were measured in CIELAB system using a standard white specimen. The samples are different regarding their dye concentration. Experiments comprising more samples sets used three different illuminators. The hue, luminosity and saturation are discussed. The phenomenon of dichroism was also studied.

The Impact of the Types of Fixer for Batik Natural Dyes From Fresh and Fallen Leaves

2019 ◽  
Author(s):  
Tri Rahayuningsih ◽  
Fungki Sri Rejeki ◽  
Dyah Widhowati
Keyword(s):  
Natural Dyes ◽  
Fallen Leaves ◽  
The Impact

scholarly journals Comparative Genomics of Xanthomonaseuroxanthea and Xanthomonas arboricola pv. juglandis Strains Isolated from a Single Walnut Host Tree

2021 ◽  
Vol 9 (3) ◽  
pp. 624
Author(s):  
Camila Fernandes ◽  
Leonor Martins ◽  
Miguel Teixeira ◽  
Jochen Blom ◽  
Joël F. Pothier ◽  
...  
Keyword(s):  
Extracellular Enzymes ◽  
Walnut Tree ◽  
Size Number ◽  
A Genome ◽  
Type 3 Secretion System ◽  
Xanthomonas Arboricola ◽  
Chromosomal Sequences ◽  
Related Proteins ◽  
Type 3 ◽  
Genome Comparisons

The recent report of distinct Xanthomonas lineages of Xanthomonas arboricola pv. juglandis and Xanthomonas euroxanthea within the same walnut tree revealed that this consortium of walnut-associated Xanthomonas includes both pathogenic and nonpathogenic strains. As the implications of this co-colonization are still poorly understood, in order to unveil niche-specific adaptations, the genomes of three X. euroxanthea strains (CPBF 367, CPBF 424T, and CPBF 426) and of an X. arboricola pv. juglandis strain (CPBF 427) isolated from a single walnut tree in Loures (Portugal) were sequenced with two different technologies, Illumina and Nanopore, to provide consistent single scaffold chromosomal sequences. General genomic features showed that CPBF 427 has a genome similar to other X. arboricola pv. juglandis strains, regarding its size, number, and content of CDSs, while X. euroxanthea strains show a reduction regarding these features comparatively to X. arboricola pv. juglandis strains. Whole genome comparisons revealed remarkable genomic differences between X. arboricola pv. juglandis and X. euroxanthea strains, which translates into different pathogenicity and virulence features, namely regarding type 3 secretion system and its effectors and other secretory systems, chemotaxis-related proteins, and extracellular enzymes. Altogether, the distinct genomic repertoire of X. euroxanthea may be particularly useful to address pathogenicity emergence and evolution in walnut-associated Xanthomonas.

scholarly journals Application of cocoa pod husk (Theobroma cocoa Spp) for natural dyes powder on silk batik cloth

2021 ◽  
Vol 980 ◽  
pp. 012020
Author(s):  
Masiswo ◽  
A Haerudin ◽  
Isnaini ◽  
D W Lestari ◽  
G B Mandegani ◽  
...  
Keyword(s):  
Natural Dyes ◽  
Cocoa Pod Husk ◽  
Theobroma Cocoa

scholarly journals Effects of green-manure and tillage management on soil microbial community composition, nutrients and tree growth in a walnut orchard

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ningguang Dong ◽  
Guanglong Hu ◽  
Yunqi Zhang ◽  
Jianxun Qi ◽  
Yonghao Chen ◽  
...  
Keyword(s):  
Microbial Community ◽  
Green Manure ◽  
Rhizosphere Soil ◽  
Green Manures ◽  
Hairy Vetch ◽  
Mineral N ◽  
Total N ◽  
Organic C ◽  
Nutrient Contents ◽  
Walnut Tree

AbstractThis study characterized the effect of green manures (February orchid, hairy vetch, rattail fescue and a no-green-manure control) and the termination method (flail or disk) on nutrient contents, enzyme activities, microbial biomass, microbial community structure of rhizosphere soil and vegetative growth of walnut tree. All three selected green manures significantly enhanced the water content, organic C, total N and available P. The rattail fescue significantly decreased the mineral N. Total organic C, total N, mineral N and available P were significantly greater under flail than under disk. Hairy vetch and February orchid significantly improved levels of soil β-glucosidase, N-acetyl-glucosaminidase and acid phosphatase activity, whereas rattail fescue improved only β-glucosidase activity. All of the green manures significantly decreased phenoloxidase activity. β-glucosidase, N-acetyl-glucosaminidase and acid phosphatase activities were significantly greater under flail relative to disk. The termination method had no significant effect on phenoloxidase activity. The different types of green manures and termination methods significantly altered the soil microbial biomass and microbial community structure. The green-manure treatments were characterized by a significantly greater abundance of Gram-positive (Gram +) bacteria, total bacteria and saprophytic fungi compared to the control. Hairy vetch significantly decreased the abundance of arbuscular mycorrhizal fungi (AMF) while February orchid and rattail fescue increased their abundance compared to the no-green-manure treatment. The abundance rates of Gram+ bacteria, actinomycetes, saprophytic fungi and AMF were significantly greater in soils under flail than under disk. In terms of vegetative growth of walnut tree, hairy vetch showed the greatest positive effects. The growth of walnut tree was significantly greater under flail relative to disk. Our results indicate that green-manure application benefits the rhizosphere soil micro-ecology, rhizosphere soil nutrient contents and tree growth. Overall, the hairy vetch and flail combined treatment is recommended for walnut orchards in northern China.

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