Oil palm: future prospects for yield and quality improvements

2009 ◽  
Vol 21 (11-12) ◽  
pp. 257-260 ◽  
Author(s):  
Denis J. Murphy
Keyword(s):  
Oil Palm ◽  
Quality Improvements ◽  
Future Prospects ◽  
Yield And Quality

scholarly journals Agricultural Price, Quantity, and Welfare Effects of Air Quality Improvements

1986 ◽  
Vol 15 (1) ◽  
pp. 1-5
Author(s):  
Marc Ribaudo ◽  
James Shortle
Keyword(s):  
Air Quality ◽  
Air Pollutants ◽  
Partial Equilibrium ◽  
Quality Improvements ◽  
Yield And Quality ◽  
Partial Equilibrium Model ◽  
Air Quality Improvement ◽  
Welfare Implications ◽  
Agricultural Price

The failure to allow for significant crop quality effects in a partial-equilibrium model can lead to misleading inferences about the price, output and welfare implications of air quality improvements. It has been observed that air pollutants such as ozone, sulphur dioxide, and nitrogen dioxide affect the yield and quality of many crops. The economic benefit from improving air quality in crop producing regions has been measured using a partial-equilibrium approach which accounts only for supply shifting yield effects. It is shown that a yield-effect only model will underestimate output increases and benefits from an air quality improvement when commodity quality improvements as well as yield increases are forthcoming.

A critical analysis on palm kernel shell from oil palm industry as a feedstock for solid char production

2016 ◽  
Vol 32 (5) ◽  
Author(s):  
Sabzoi Nizamuddin ◽  
Siddhartha Shrestha ◽  
Saadia Athar ◽  
Brahim Si Ali ◽  
Muhammad Ahmar Siddiqui
Keyword(s):  
Oil Palm ◽  
Palm Kernel ◽  
Oil Industry ◽  
Future Prospects ◽  
Heating Value ◽  
Production Methods ◽  
Palm Kernel Shell ◽  
Bio Oil ◽  
Proximate And Ultimate Analyses ◽  
Oil Palm Industry

AbstractPalm kernel shell (PKS) is one of the greatly abundant residues in the palm oil industry. It possesses physiochemical characteristics that build in it a potential to serve the production of valuable products, namely, bio-fuels such as char, bio-oil, and bio-gas. This paper presents the properties of PKS as a biomass feed for the production of char. Characterizations of PKS in terms of proximate and ultimate analyses, chemical composition, and higher heating value (HHV in terms of MJ/kg) are presented and consequently compared to different oil palm biomass such as empty fruit bunch (EFB), fiber, fronds, and trunks. To illustrate and signify stability, the aforementioned characteristics are discussed for PKS-char, along with further comparison with EFB-char and coal. In addition, recent advances in char production methods from PKS are presented and compared. Simultaneously, future prospects and major challenges towards the utilization of PKS for the production of char are also addressed.

scholarly journals Influence of palm kernel variables on the yield and quality of oil expressed using an expeller

2021 ◽  
Vol 67 (No. 2) ◽  
pp. 92-99
Author(s):  
Sunday Louis Ezeoha ◽  
Clement Onyeaghala Akubuo
Keyword(s):  
Oil Palm ◽  
Heating Temperature ◽  
Palm Kernel ◽  
Design Expert ◽  
Kernel Oil ◽  
Yield And Quality ◽  
Processing Variables ◽  
The Impact ◽  
Heating Duration

The objectives of this study were to establish the impact order of the oil-palm kernel processing variables, namely: kernel moisture content (KMC), kernel heating temperature (KHT), kernel heating duration (KHD), and kernel particle size (KPS) on the palm kernel oil (PKO) yield; to develop an empirical model for the PKO yield as influenced by the KMC, KHT and KHD; to investigate the effect of the KMC, KHT and KHD on the PKO quality; and to specify levels of the kernel variables for the maximum PKO yield with minimum variability. The study was undertaken using oil-palm kernels of unidentified variety from Nsukka, Nigeria. The statistical analysis of data was performed with Design-Expert 8P and Minitab 19 Software at P = 0.05.  The impact order of the studied kernel variables on the PKO yield, using an expeller (MS-100), was found to be the KPS, KMC, KHD, and KHT. For the maximum PKO yield with minimum variability in the PKO yield, a KMC of 5% (wb), a KHT of 80 °C, a KHD of 10 min, and a KPS of 11 mm and above is recommended.

scholarly journals Producing Enhanced Yield and Nutritional Pigmentation in Lollo Rosso Through Manipulating the Irradiance, Duration, and Periodicity of LEDs in the Visible Region of Light

2020 ◽  
Vol 11 ◽  
Author(s):  
Laura Cammarisano ◽  
Iain S. Donnison ◽  
Paul R. H. Robson
Keyword(s):  
Visible Region ◽  
High Energy ◽  
Anthocyanin Content ◽  
Quality Improvements ◽  
Fresh Weight ◽  
Beneficial Effects ◽  
Yield And Quality ◽  
Asymptotic Energy ◽  
Anthocyanin Production ◽  
Test Optimization

Pigmented food are an important part of the human diet, and anthocyanins have demonstrable protection against tumor production in mouse models and beneficial effects on human liver chemistry. As such, producing pigmented crops is important for a nutritionally diverse diet. Lollo rosso lettuce is a fast-growing pigmented plant, is rich in phenolic compounds, and represents a suitable system to test optimization strategies for yield and anthocyanin production. High-energy UV wavebands are often used to stimulate increased pigmentation; however, we hypothesized that optimizing visible wavebands would deliver both yield and quality improvements. Growing Lollo rosso under irradiances between 5 and 180 W m–2 using visible waveband LEDs produced 0.4 g fresh weight per W m–2 in the linear portion of the curve between 5 and 40 W m–2 and achieved an approximate asymptote of 20 g fresh weight at around 100–120 W m–2 for yield. Anthocyanin content increased linearly with irradiance. We attempted to optimize the visible wavebands by supplementing half the asymptotic energy for 15 days with supplemental red (R) or blue (B) wavebands in the peaks of photosynthetic activity (430–460 and 630–660 nm). R and B affected rosette morphology with no significant impact on yield, but B significantly increased anthocyanin content by 94% compared to R. We therefore focused on further optimizing B by shortening the daily duration of supplemental B. The minimum B treatment that lacked significant pigment induction was 1 h. We hypothesized that short durations would be more active at different times in the diurnal cycle. Supplemental B was applied for 2 h at four different times. A night-break with B produced the highest yield and anthocyanin content. Our research demonstrates new ways to efficiently use readily available LEDs within the PAR wavebands to increase both yield and crop quality in controlled environment agriculture.

scholarly journals Comparative Investigation of Yield and Quality of Bio-Oil and Biochar from Pyrolysis of Woody and Non-Woody Biomasses

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1092
Author(s):  
Pranshu Shrivastava ◽  
Anil Kumar ◽  
Perapong Tekasakul ◽  
Su Shiung Lam ◽  
Arkom Palamanit
Keyword(s):  
Oil Palm ◽  
Energy Content ◽  
Liquid Product ◽  
Value Added ◽  
Comparative Investigation ◽  
High Carbon ◽  
Average Pore ◽  
Yield And Quality ◽  
Liquid Yield ◽  
Palm Fronds

This study investigated the quantitative and qualitative attributes of liquid product and biochar obtained from pyrolysis of woody biomass (rubberwood sawdust (RWS)) and non-woody biomasses (oil palm trunk (OPT) and oil palm fronds (OPF)). The prepared biomass was pyrolyzed at temperatures of 500 °C, 550 °C, and 600 °C by using an agitated bed pyrolysis reactor, and then the yields and characteristics of liquid product and biochar were determined. The results showed that liquid product and biochar yields were in the respective ranges of 35.94–54.40% and 23.46–25.98% (wt.). Pyrolysis of RWS at 550 °C provided the highest liquid yield. The energy content of the water free liquid product was in the range 12.19–22.32 MJ/kg. The liquid product had a low pH and it mainly contained phenol groups as indicated by GC-MS. The biochars had high carbon contents (75.07–82.02%), while their oxygen contents were low (14.22–22%). The higher heating value (HHV) of biochar was in the range 26.42–29.33 MJ/kg. XRF analysis revealed that inorganic elements had higher contents in biochar than in the original biomass. The slagging and fouling indexes of biochar were also different from those of the biomass. High carbon content of the biochar confirms potential for its use in carbon sequestration. The specific surface of biochar was lower than that of biomass, while the average pore diameter of biochar was larger than for raw biomass as revealed by BET and SEM. These results on liquid product and biochar obtained from RWS, OPT, and OPF demonstrate that they are promising feedstocks for biofuels and other value-added products.

Oil Palm (Elaeis guineensis) Biomass in Malaysia: The Present and Future Prospects

2018 ◽  
Vol 10 (8) ◽  
pp. 2099-2117 ◽  
Author(s):  
Emmanuel Onoja ◽  
Sheela Chandren ◽  
Fazira Ilyana Abdul Razak ◽  
Naji Arafat Mahat ◽  
Roswanira Abdul Wahab
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Future Prospects
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