Rumex abyssinicus (mekmeko) Ethiopian plant material for preservation of goat skins: Approach for cleaner leather manufacture

Mohammed, Shegaw Ahmed; Madhan, Balaraman; Demissie, Berhanu Assefa; Brindha, V.; Selvi, A. Tamil

doi:10.1016/j.jclepro.2016.06.043

Cited by 48 publications

(23 citation statements)

References 5 publications

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“…Recently attempts have been made to explore the use of new plant materials for tanning. Recently, in an attempt of the use of natural materials in tanning process, one of the co-authors in this manuscript have recently established the use of mekmeko (Rumex abyssinicus) for preservation, tanning and dyeing in leather manufacture [4][5][6][7]. Our extensive search indicates that researches is being undertaken to establish vegetable tanning using new plant materials.…”

Section: Introductionmentioning

confidence: 98%

Sodom Apple (Solanum Incanum) Plant Material: A Greener Approach for Goat Skin Tanning Process

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Badessa

Mohammed

2020

Preprint

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The use of natural materials that is eco-friendly on leather as vegetable tannins has become a matter of significant importance, as a result of increased environmental awareness to prevent some hazardous synthetic tannin. Therefore, this study investigated that the potential of the extracted tannin from Sodom apple (Solanum Incanum) fruit for its effectiveness as vegetable tanning agent on goatskins. It was extracted with distilled water, methanol, petroleum ether and ethanol by using Soxhlet extraction method. Although the amount of material extracted was significant in all extracting solvents, water was a more efficient solvent (extraction yield of 16.71%) than the others. The qualitative analysis and structural characterization of the extracts were done using thin layer chromatography (TLC), Ultraviolet (UV) spectrometer and Fourier Transformer Infrared (FT-IR) spectrometer. The analysis confirmed that the presence of condensed tannins in the extract, which usually used for the application of tanning process in leather manufacturing industry. On other hand, the Quantitative Analysis of Sodom apple fruit extract was conducted by evaluating its moisture content (7.59%), total soluble solids (21.45%), tannin content (12.13%) and non-tannin contents (9.32%). The Scanning Electron Microscope (SEM) was carried out to study the effect of the tannin system on the structural and morphological characteristics of the tanned leathers. Similarly, the organoleptic and strength properties of the tanned leathers were evaluated in comparison with the control ones. Finally, the pollution loads of tanning liquors in Sodom apple tanning significantly reduced as compared with the control (mimosa). Thus, the results in this study showed that the manufacture of leather based on Sodom apple fruit extract found to be a cleaner alterative and promising pathway for tanning goatskins.

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Section: Introductionmentioning

confidence: 98%

Sodom Apple (Solanum Incanum) Plant Material: A Greener Approach for Goat Skin Tanning Process

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Badessa

Mohammed

2020

Preprint

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“…The plant is generally considered as a native of Africa, especially Ethiopia ( Abyssinicus means from Abyssinia, Ethiopia), and the plant in the Amharic language referred as mekmeko 13‐15 . It is reported that the root of mekmeko plant material has antibacterial activity, and in an attempt of the use of natural materials in leather processing, we have recently established the use of mekmeko material for the preservation of goat skins 16 . However, there is no reported literature on the use of mekmeko as a tanning agent.…”

Section: Introductionmentioning

confidence: 99%

Rumex abyssinicus (mekmeko): A newer alternative for leather manufacture

Mohammed

Ariram

Madhan

et al. 2020

Env Prog and Sustain Energy

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The development of a cleaner and sustainable tanning system is gaining more importance, which is driving the search to an alternative for conventional chrome tanning. In the present study, tanning systems based on Rumex abyssinicus (mekmeko) extract for the production of upper leathers were investigated as a cleaner alternative tanning system. The characteristics of mekmeko extract as a tanning agent for leather processing were also studied in comparison with commercial wattle extract, as a control. The average size of particles in mekmeko extract is observed to be slightly higher than wattle extract. The critical aggregation concentration of mekmeko is observed to be at 0.39%, which is slightly at a higher concentration than wattle extract. An increase in hydrothermal stability of leathers with the increasing offer of mekmeko for tanning was observed. The organoleptic and strength properties of the upper leathers from the mekmeko tanning system are found to be comparable to that of wattle tanning systems. Therefore, the results in this study indicate that the manufacture of upper leathers using the tanning mentioned above system found to be satisfactory and also leads to a greener tanning pathway.

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“…It is a perennial herb, which grows up to 3 m tall, with a thick, fleshy rhizome. The plant is endemic to Ethiopia and it is referred to as mekmeko in the Amharic language (11,12).…”

Section: Introductionmentioning

confidence: 99%

Chemical Constituents of Rumex abyssinicus Roots and Evaluation of Its Antimicrobial Activities

Shifa

Abdissa

Asere

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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Medicinal plants are usually screened for phytochemicals that may lead to further isolation, purification, and characterization of their active principles. The roots of Rumex abyssinicus are used traditionally in Ethiopia for treating different diseases such as hepatitis, hemorrhoids, gonorrhea, typhus, and wounds. Thus, this study was conducted to investigate the phytochemicals and in vitro antimicrobial activity of the roots of R. abyssinicus extracts. The roots were collected, chopped, and airdried under shade in the laboratory. Then, the dried plant material was subjected to sequential extraction using the maceration technique by soaking 1 kg of the sample in petroleum ether, chloroform, acetone, and methanol. Meanwhile, the filtrates were concentrated under reduced pressure using a rotary evaporator. Afterward, the crude extracts were dried and screened for in vitro antimicrobial activity tests using four bacterial and two fungal strains. Based on its activity, the acetone extract was used for column chromatographic isolation. Herein, two known anthraquinones were isolated and characterized: chrysophanol and emodin. The microbial activity of both extracts and isolated compounds were evaluated against medically important strains by the agar disc diffusion method. The concentration of the extracts and isolated compounds was 100 mg/mL tested against S. aureus ATCC25903, K. pneumoniae NCTC13368, E. coli ATCC 25722, P. aeruginosa DSMZ 1117 and C. albicans and S. cerevisiae. The zone of growth inhibition of extracts and isolated compounds were compared with standard drugs like Gentamycin and Mancozeb. The results showed that the isolated compounds (1 and 2) have higher bacterial growth inhibition than the extracts. However, compound 2 was not active against S. cerevisiae strain.

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Rumex abyssinicus (mekmeko) Ethiopian plant material for preservation of goat skins: Approach for cleaner leather manufacture

Cited by 48 publications

References 5 publications

Sodom Apple (Solanum Incanum) Plant Material: A Greener Approach for Goat Skin Tanning Process

Sodom Apple (Solanum Incanum) Plant Material: A Greener Approach for Goat Skin Tanning Process

Rumex abyssinicus (mekmeko): A newer alternative for leather manufacture

Chemical Constituents of Rumex abyssinicus Roots and Evaluation of Its Antimicrobial Activities

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