Menbere Kinfe Habtie
BahirDare University Enineering Faculty , Adisabeba, Ethiopia
Title: Reutilization of avocado seed as beneficial product in leather processing after some extraction
Biography
Biography: Menbere Kinfe Habtie
Abstract
This study focuses on the reutilization of avocado seed as beneficial product in leather processing after some extraction. Avocado seed are one of the most important by-products from fruit juice processing industry. Avocado seed have two part of fraction i.e. tannin and oil components. The oil was extracted from avocado seed obtained by dichloromethane (DCM), n-haxane (HE) and petroleum ether (PE) solvent and the tannin extraction of avocado seed was obtained by water base and hexane. The extracted tannin and oil from avocado seed was used for preparation of lubricant retanning agents and used in retannage of upper leathers.
The oil and the extracted tannin fractions were characterized and then used in the development of the product. Various parameters, such as time, temperature and solvent (concentration and amount) of tannin liquor have been optimized. The optimized product was used in the retanning of upper leathers.
The results of the study showed that various parameters contributed to the extraction optimization of avocado seed oil as the n –hexane gave higher oil yields 1.59% as compared to other solvent.
According to the physicochemical analysis of the oil extract has been shown 3.63%, 7.73 mg, 51.8 mg iodine/g , 207 .3 mg KOH/ g and 214.5 mg KOH/ g of Free fatty Acid ( FFA), acid value ( AV), Iodine value (IV), Ester value (EV) and Saponification value (SV).
Literally there is an indication of the phenolic group are existed on the seed. To proof this we tried in different factor of solvent, time and temperature. The result of this is checked with FTIR analysis; from the result for 8hr at 1000c is showed better resolution then other factors of extraction. And also the fine solid power of hexane extracted has shown the maximum amount of phenolic groups.
The physical properties of sheep shoe upper leather were on par with that of the control leathers. The color intensity of the experimental leathers is better than the control leathers.
Finaly this reaserch had been applied the waste recycling from municpal samll processing industries to industrial level of solid dischargi