scholarly journals Extraction and Application of Natural Dyes on Natural Fibers: An Eco-Friendly Perspective

2020 ◽  
Vol 3 (1) ◽  
pp. 63-75
Author(s):  
Rakhshan Ahsan ◽  
Afsheen Masood ◽  
Rabiah Sherwani ◽  
Hafiza Khushbakhat
Keyword(s):  
Natural Resources ◽  
Natural Fibers ◽  
Economic Benefits ◽  
Natural Dyes ◽  
Health Hazards ◽  
Past Century ◽  
Synthetic Dyes ◽  
Plant Leaves ◽  
Environmental Threats ◽  
History Of

Dyes derived from natural resources like plant leaves, roots, bark, fruits, stem, insect secretions, and minerals were the only dyes available in the history of mankind for dyeing textiles. The first discovery of the synthetic dyes dates back to 1856.Due to the industrialization and globalization, the use of the synthetic dyes has increased in past century. The variety in hue, shades and economic benefits of synthetic dyes have declined gradually and slowly. However, the environmental threats and health hazards to humans have pushed them to the old and natural dyeing resources. Textiles colored with natural dyes are preferred by eco-friendly buyers. Today there is a niche market for such textiles. This paper reviews the available floral, trees, leave, barks, herbs, etc resources, application and extraction of colorants from different natural dyes, and effect of different mordents.

scholarly journals Pembuatan Batik Alam Berbahan Tumbuhan Sekitar Rumah

2020 ◽  
Vol 5 (4) ◽  
pp. 343-350
Author(s):  
Misrita Misrita ◽  
Rosdiana Rosdiana ◽  
Srie Rosmilawati ◽  
Imam Qalyubi
Keyword(s):  
Natural Resources ◽  
Community Service ◽  
Small And Medium Enterprises ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Plant Leaves ◽  
Cultural Arts ◽  
Medium Enterprises ◽  
Design Motifs ◽  
Insight Into

Batik is one of Indonesia's cultural arts, which has been integrated with Indonesian people since several centuries ago. However, so far, the batik produced still uses synthetic motifs and coloring, which can contribute to environmental pollution. Hence, people's interest in batik starts to diminish, so it is necessary to find breakthroughs in batik motifs and coloring, which are more environmentally friendly by using natural dyes. One of the natural dyes for batik is to use plant leaves that grow around the house, also called eco print, which is the activity of making leaves with specific patterns on a t-shirt, which produces motifs and colors obtained from the leaves. The target partners involved in community service activities are women's business groups in Palangka Raya, which are under the auspices of the Palangka Raya City Cooperative, Small and Medium Enterprises Agency, namely UKM Bawi Dayak Palangka Raya. This is because the batik produced so far still uses synthetic motifs and coloring. Assistance carried out for this group is to provide insight into knowledge and understanding of the importance of natural coloring and the danger of synthetic dyes. Build and encourage creativity informing design motifs and colors on fabric through the use of leaves that grow around the house. Outcome targets are t-shirt products that use leaves as motifs and natural dyes�introducing natural batik with the use of natural resources around.

scholarly journals Production of Natural Dye from Beet Roots (BETA VULGARIS L.) by using different Mordants

2021 ◽  
Vol 9 (VI) ◽  
pp. 466-473
Author(s):  
Nisha A. Nerlekar
Keyword(s):  
Natural Resources ◽  
Beta Vulgaris ◽  
Metal Salt ◽  
Small Difference ◽  
Natural Dye ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Salt Form ◽  
Plant Materials ◽  
Wide Range

Dyes can be derived from nature by different part of plants. Natural dyes give the color like cool, warm colors that are with unique combinations. Dyes are made from natural resources like plants, animals, and minerals tend to produce colors that wash out easily. With most natural dyes, a mordant can be used to make color more permanent. In the mordanting process the fiber of wool, cotton is treated with a solution of a metal salt (usually an aluminum, chromium, copper, iron, or tin salt). Then the fiber is dyed with natural colors. Metals ions which are present in the salt form strong bonds with the fiber and also with the dye, therefore holding the dye to the fiber. In this activity, we can easily extract colored compounds from plant materials; use them to dye white cloths. A small difference in the dyeing technique or the use of different mordants with the same dye can shift the colors of a wide range or create new colors, which are not easily possible with synthetic dyes. Natural dyes are usually moth proof and can replace synthetic dyes in kid garments and food stuff for safety which have allergy to synthetic dyes.

scholarly journals NATURAL DYES EXTRACTED FROM WASTE LEAVES OF TERMINALIA CATAPPA LOCALLY KNOWN AS TROPICAL ALMOND AND ITS APPLICATION ON SILK FABRICS PRETREATED WITH ECO FRIENDLY AND NONECO-FRIENDLY MORDANTS

2017 ◽  
Vol 5 (5) ◽  
pp. 125-137 ◽  
Author(s):  
Yogesh Vadwala ◽  
Namrita Kola
Keyword(s):  
Natural Resources ◽  
Environmental Pollution ◽  
Waste Product ◽  
Natural Dye ◽  
Natural Dyes ◽  
Synthetic Dyes ◽  
Fastness Properties ◽  
Terminalia Catappa ◽  
Silk Fabrics ◽  
Dyes And Pigments

The use of non-toxic and eco-friendly natural dyes on textiles has become a matter of significant importance because of the increased environmental awareness in order to avoid some synthetic dyes. Synthetic dyes are hazardous and carcinogenic and also release vast amount of pollutant in the environment during their manufacture and application, thus revival of natural dyeing techniques as one of the alternative is being emphasized for this purpose. Most effective ways for reducing environmental pollution is the replacement of polluting materials and chemicals by eco-friendly natural materials. Many natural resources which are being wasted indiscriminately or thrown away as a waste product contain useful dyes and pigments. In the present study, natural dye extracted from the waste leaves of Terminalia Catappa (tropical almond) and its application on silk fabrics pretreated with eco-friendly and non-eco-friendly mordants have been carried out successfully. Different shades with excellent to good fastness properties have been obtained.

scholarly journals Indigenous People, Organized Crime and Natural Resources: Borders, Incentives and Relations

2021 ◽  
Author(s):  
Daan P. van Uhm ◽  
Ana G. Grigore
Keyword(s):  
Natural Resources ◽  
Indigenous People ◽  
Organized Crime ◽  
Indigenous Communities ◽  
Economic Incentives ◽  
Environmental Harm ◽  
Criminological Perspective ◽  
History Of ◽  
Organized Crime Groups ◽  
Criminal Groups

AbstractThis article explores the relationship between the Emberá–Wounaan and Akha Indigenous people and organized crime groups vying for control over natural resources in the Darién Gap of East Panama and West Colombia and the Golden Triangle (the area where the borders of Laos, Myanmar (Burma), and Thailand meet), respectively. From a southern green criminological perspective, we consider how organized crime groups trading in natural resources value Indigenous knowledge. We also examine the continued victimization of Indigenous people in relation to environmental harm and the tension between Indigenous peoples’ ecocentric values and the economic incentives presented to them for exploiting nature. By looking at the history of the coloniality and the socioeconomic context of these Indigenous communities, this article generates a discussion about the social framing of the Indigenous people as both victims and offenders in the illegal trade in natural resources, particularly considering the types of relationships established with dominant criminal groups present in their ancestral lands.

scholarly journals China and the global search for health security: history, vaccines, and governance

2021 ◽  
Author(s):  
Daojiong Zha
Keyword(s):  
Global Health ◽  
Final Section ◽  
Analytical Framework ◽  
Global Search ◽  
Effective Control ◽  
Past Century ◽  
Health Governance ◽  
Health Security ◽  
Core Elements ◽  
History Of

AbstractChina is a key player, not just an actor, in the global search for health security. Reiteration of this point is useful for International Relations studies, which often portray China as a factor to contend with, especially given the background of the country as the first to report the outbreak of the COVID-19 pandemic. This paper adopts an analytical framework developed through a summary of routines in Chinese engagement in global health from a practitioner’s perspective: aid, interdependence, governance and knowledge. These are the core elements in a country’s pursuit of engagement with the rest of the world. After the introduction, the second section of the paper reviews contributions from China in the history of global plague control over the past century. The third section discusses structural issues affecting access to vaccines, which are essential for bringing COVID-19 under effective control. The fourth section identifies a number of challenges China is facing in global health governance. The final section offers a few concluding thoughts, reiterating the nature of interdependence in the global search for enhancement of health security.

scholarly journals Reusing wasteroot of Rubia wallichiana dyeing from Monpa of Tibet in China

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rong Yang ◽  
Yu Zhang ◽  
Sailesh Ranjitkar ◽  
Mingxiang Li ◽  
Yongjie Guo ◽  
...  
Keyword(s):  
Cultural Values ◽  
Aqueous Extract ◽  
Ethyl Alcohol ◽  
Economic Benefits ◽  
Natural Dyes ◽  
Body Parts ◽  
Color Strength ◽  
Alcohol Extract ◽  
Dyeing Properties ◽  
Ecological Economic

AbstractHumans have dyed textiles and leather, colored food, and paint body parts using natural dyes throughout history. Natural dyes have suffered drastically due to recent socioeconomic changes and replacement with synthetic dye in the textile industry. Hence, it is urgent to study indigenous dye plants and dyeing craft in local communities to protect these resources' potential ecological, economic, and cultural values. In 11 Monpa villages of Mêdog County, South-east Tibet, China, we conducted field research to record the indigenous method of cloth dyeing using madder dye. An aqueous extract of the root of Rubia wallichiana is a traditional madder dye. In this study, we used traditional dye and ethyl alcohol extract of the residue of aqueous extract. Two fabrics were dyed with the extractions in the presence of one of the metallic mordants or biomordants. Pigment compounds from aqueous extraction of madder and ethyl alcohol extraction of recycled madder were evaluated using Phytochemical, UV–visible spectroscopy, and FTIR test. We carried out One-way ANOVA and Duncan's new multiple range method to analyze different dying approaches and conditions. The dyed fabrics were evaluated by indicators of color strength and fastness, including washing, rubbing, and perspiration. The findings revealed the potentiality of biomordants to improve the dyeing properties of madder. The dyeing properties of recycled madder were marginally better than traditional madder. The results revealed the feasibility of enhancing the dyeing property and reuse of the residue from madder dyeing. The improved dyeing and reuse of residue can improve local ecological, economic benefits, and cultural heritage while applying research findings for the subsequent commercialization of plant dyes.

Franz Rosenthal’s Half an Autobiography

2014 ◽  
Vol 54 (1) ◽  
pp. 34-105
Author(s):  
Hinrich Biesterfeldt
Keyword(s):  
Geographical Location ◽  
The United States ◽  
Past Century ◽  
Yale University ◽  
Islamic History ◽  
Near Eastern ◽  
Literary Sources ◽  
Turbulent Times ◽  
History Of ◽  
Near Eastern Studies

Franz Rosenthal (1914-2003), one of the outstanding scholars of Semitic languages, Arabic and Islamic history of the past century, has described himself as an Orientalist, whose task is “to look beyond the culture in which one is rooted to other cultures whatever their geographical location with respect to Europe, in order to learn about and understand them and to try to spread the knowledge thus acquired”. This simple-sounding approach is qualified by a vast knowledge of the appropriate literary sources and a keen sense for the truly significant topic that characterize all of Rosenthal’s works. His memoir discusses these aspects, as well as the profile and outlook of Near Eastern Studies, particularly in relation to neighboring disciplines, and the roles of philology and language teaching. What is at least as interesting as this discussion is an autobiographical account of Rosenthal’s family, his school and university years in Berlin, of his emigration to the United States, and his career up to his arrival at Yale University – a memoir which illuminates his work and his convictions and which tells a story of “cruelly turbulent times” that changed the lives of many scholars and opened up new ways of scholarship.


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