WO2016159394A8 - New eco-friendly and clean method of processing hides and fish skins into leather using alkaline protease enzyme - Google Patents
New eco-friendly and clean method of processing hides and fish skins into leather using alkaline protease enzyme Download PDFInfo
- Publication number
- WO2016159394A8 WO2016159394A8 PCT/KE2016/000047 KE2016000047W WO2016159394A8 WO 2016159394 A8 WO2016159394 A8 WO 2016159394A8 KE 2016000047 W KE2016000047 W KE 2016000047W WO 2016159394 A8 WO2016159394 A8 WO 2016159394A8
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- leather
- dehairing
- hides
- fish
- friendly
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 6
- 241000251468 Actinopterygii Species 0.000 title abstract 5
- 239000010985 leather Substances 0.000 title abstract 5
- 108091005658 Basic proteases Proteins 0.000 title abstract 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 108090000790 Enzymes Proteins 0.000 abstract 1
- 102000004190 Enzymes Human genes 0.000 abstract 1
- 241001147156 Lates niloticus Species 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 230000003796 beauty Effects 0.000 abstract 1
- 238000010364 biochemical engineering Methods 0.000 abstract 1
- 230000002255 enzymatic effect Effects 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 229910052979 sodium sulfide Inorganic materials 0.000 abstract 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/06—Facilitating unhairing, e.g. by painting, by liming
- C14C1/065—Enzymatic unhairing
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The present invention relates to an eco-friendly bio-processing method for the processing of hides and fish skin from Nile Perch (Lates niloticus)) into leather, comprising mainly enzymatic treatment of the hide or skin with crude alkaline proteases enzyme in the pretanning steps. This method produces fish leather with moire patterns unique to fish skin created through the descaling process, which in turn provide beauty totally different from that of general leather. According to this invention, the method for dehairing of hides or skins and descaling fish skin has been greatly simplified, pollution impact on the environment reduced in a maximum way and at the same time does not cause damage to grain. Moreover, the valuable hair and scales removed during dehairing or descaling process are readily recovered from the enzyme liquor while still in good condition suitable for further use. The final leather product exhibit better qualities such as softness, toughness and pliability. This invention completely eliminates use of sodium sulfide and lime in dehairing as well as greatly reducing the pungent smell which is the characteristic smell of tanneries across the world.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KE223115 | 2015-04-01 | ||
| KEKE/P/2015/2231 | 2015-04-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2016159394A1 WO2016159394A1 (en) | 2016-10-06 |
| WO2016159394A8 true WO2016159394A8 (en) | 2016-10-27 |
Family
ID=57003010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KE2016/000047 WO2016159394A1 (en) | 2015-04-01 | 2016-03-31 | New eco-friendly and clean method of processing hides and fish skins into leather using alkaline protease enzyme |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2016159394A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230855A (en) * | 2021-12-18 | 2022-03-25 | 河北省微生物研究所有限公司 | Method for recycling wool fibers by using complex enzyme preparation |
| CN118406613A (en) * | 2024-05-31 | 2024-07-30 | 江苏海洋大学 | Marine bacterium Bacillus sp.G12 and protease production method and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1011668B (en) * | 1973-04-28 | 1977-02-10 | Roehm Gmbh | PROCEDURE OF PURGE OF THE SKINS |
| DE4332785A1 (en) * | 1993-09-27 | 1995-03-30 | Roehm Gmbh | Improved enzyme-assisted liming process |
| GB2518928B (en) * | 2013-05-15 | 2017-03-01 | New Zealand Leather And Shoe Res Ass | Method of depilation |
-
2016
- 2016-03-31 WO PCT/KE2016/000047 patent/WO2016159394A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016159394A1 (en) | 2016-10-06 |
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