Normally hull accounts for 12-19% of whole seed. The main composition is fiber. Minority other includes little oil, protein, pigment, tannin, sinapine and phytic acid. With dehulling, it can not only separate anti-nutrition matters, also boost protein level from 35-40% to 45-48%. The color of meal becomes more yellowish. The meal and oil quality are both improved. The attached photos show canola oil after dehulling and without dehulling. There is apparent difference in color, also in some intrinsic value.
Main dehulling methods are grinding, smashing, shearing and pressing. None of them can give effective result alone. The dehulling is either low rate or small capacity, not viable for an ordinary oil mill. After series of experiment and trial run, we have developed a special dehulling device incombination of above-mentioned four methods and novel dehulling equipment giving 85% dehullling rate at 1500t/d capacity. After dehulling the kernel are mostly in half condition with complete detachment of hull. The protein in rapeseed cake is around 46%. We have been working on such dehulling process at 1000t/h plus for 6 months. Average processing cost for dehulling is below USD1.5/T in China. The performance is steady and continuous, which proves our approach is mature for mass industrial production.
The analysis of meal content.
| |
37% Conventional canola meal |
44% Dehulled conala meal |
43% Soya meal |
| Moisture (%) |
11.7 |
11.8 |
12.8 |
| Crude protein (%) |
37.5 |
44.2 |
43.6 |
| Crude fat (%) |
2.4 |
3.6 |
1.9 |
| Crude fiber (%) |
11.6 |
7.91 |
5.9 |
| Crude dust (%) |
6.1 |
5.9 |
6.7 |
| Calcium (%) |
1.06 |
0.45 |
0.36 |
| Phosphate (%) |
0.89 |
1.12 |
0.53 |
| Amino acid |
|
| Aspartate(%) |
2.76 |
3.13 |
5.04 |
| Threonine (%) |
1.62 |
1.74 |
1.68 |
| Serine (%) |
1.51 |
1.75 |
2.17 |
| Glustate (%) |
6.16 |
7.96 |
7.66 |
| Proline (%) |
2.19 |
2.41 |
2.11 |
| glycine (%) |
1.82 |
2.15 |
1.9 |
| Alanine (%) |
1.63 |
1.78 |
2.1 |
| Cystine (%) |
- |
- |
- |
| Valine (%) |
1.64 |
2.04 |
1.76 |
| Methionine (%) |
0.69 |
0.78 |
0.66 |
| Isoleucine (%) |
1.27 |
1.62 |
1.69 |
| Leucine (%) |
2.52 |
2.99 |
3.2 |
| Tyrosine (%) |
1.12 |
1.23 |
1.62 |
| Ipa (%) |
1.41 |
1.68 |
2.19 |
| Lysine (%) |
2.02 |
2.4 |
2.55 |
| Histidine (%) |
1.11 |
1.32 |
1.3 |
| Arginine (%) |
2.14 |
2.65 |
3.01 |
| Tryptophan (%) |
- |
- |
- |
| Total |
31.61 |
37.63 |
40.64 |
WHO WE ARE?
This is Jiangsu Honggang Industries Co., LTD. that as a subsidiary of Jiangsu Textile Group Co., Ltd. , wholly owned by state capital, established in 1982.
Our registered capital 12 million RMB(2m USD), real-estate asset over 250 million RMB (40m USD).
We are the company that concentrate in edible oil machinery and other farm products processing machinery.
With accumulated experience and expertise, we can design and configure oil lines catering to specific customers' requirements.
Additionally, we are equipped with a strong and professional after-sale service team.
Meanwhile we also export oil related industrial machinery.
Welcome to contact us no matter you have any requirements or questions.
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