scholarly journals Effect of Processing Method on Carotenoid Profiles of Oils from Three Varieties of Nigerian Palm Oil (Elaise guinensis)

2021 ◽  
Vol 12 (03) ◽  
pp. 23-31
Author(s):  
Sunday Onyekwere Eze ◽  
Joshua Nkechukwu Orji ◽  
Victor Uchenna Okechukwu ◽  
Daniel Omeodisemi Omokpariola ◽  
Theresa Chisom Umeh ◽  
...  
Keyword(s):  
Palm Oil ◽  
1984 ◽  
Vol 25 (4) ◽  
pp. 411-427 ◽  
Author(s):  
Susan Martin

Three main forms of agrarian change are shown to have occurred in the Ngwa region during the period covered in this article. The first was the adoption of a new hand-processing method for palm oil, which can be seen as a response to growing pressures on female labour resources as Ngwa farmers increased their export production of palm oil and kernels. The second was the adoption of cassava by women. This increased their workloads but helped them to fill a hungry-season gap in local food supplies. It formed part of a long-term trend of diversification within Ngwa agriculture. Finally, men began helping with cassava processing. Like their earlier entry into palm-oil processing, this move reflected not only a growing pressure on female labour resources but also a need for men to participate in processing if they were to claim a share of the saleable product. In the concluding sections of the article, gender relations are shown to have influenced farmers' patterns of saving and investment. An awareness of gender is seen to be relevant when considering both the issue of mechanisation and the history of other kinds of agrarian change.


Author(s):  
K.L. More ◽  
R.A. Lowden ◽  
T.M. Besmann

Silicon nitride possesses an attractive combination of thermo-mechanical properties which makes it a strong candidate material for many structural ceramic applications. Unfortunately, many of the conventional processing techniques used to produce Si3N4, such as hot-pressing, sintering, and hot-isostatic pressing, utilize significant amounts of densification aids (Y2O3, Al2O3, MgO, etc.) which ultimately lowers the utilization temperature to well below that of pure Si3N4 and also decreases the oxidation resistance. Chemical vapor deposition (CVD) is an alternative processing method for producing pure Si3N4. However, deposits made at temperatures less than ~1200°C are usually amorphous and at slightly higher temperatures, the deposition of crystalline material requires extremely low deposition rates (~5 μm/h). Niihara and Hirai deposited crystalline α-Si3N4 at 1400°C at a deposition rate of ~730 μm/h. Hirai and Hayashi successfully lowered the CVD temperature for the growth of crystalline Si3N4 by adding TiCl4 vapor to the SiCl4, NH3, and H2 reactants. This resulted in the growth of α-Si3N4 with small amounts of TiN at temperatures as low as 1250°C.


1918 ◽  
Vol 86 (2226supp) ◽  
pp. 135-135
Keyword(s):  

Planta Medica ◽  
2010 ◽  
Vol 76 (05) ◽  
Author(s):  
MR Khan ◽  
S Siddiqui ◽  
K Parveen ◽  
WA Siddiqui

2019 ◽  
Vol 2 (1) ◽  
pp. 59-64
Author(s):  
Vincentius Vincentius ◽  
Evita H. Legowo ◽  
Irvan S. Kartawiria

Natural gas is a source of energy that comes from the earth which is depleting every day, an alternative source of energy is needed and one of the sources comes from biogas. There is an abundance of empty fruit bunch (EFB) that comes from palm oil plantation that can become a substrate for biogas production. A methodology of fermentation based on Verein Deutscher Ingenieure was used to utilize EFB as a substrate to produce biogas using biogas sludge and wastewater sludge as inoculum in wet fermentation process under mesophilic condition. Another optimization was done by adding a different water ratio to the inoculum mixture. In 20 days, an average of 6gr from 150gr of total EFB used in each sample was consumed by the microbes. The best result from 20 days of experiment with both biogas sludge and wastewater sludge as inoculum were the one added with 150gr of water that produced 2910ml and 2185ml of gas respectively. The highest CH 4 produced achieved from biogas sludge and wastewater sludge with an addition of 150gr of water to the inoculum were 27% and 22% CH 4 respectively. This shows that biogas sludge is better in term of volume of gas that is produced and CH percentage.


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