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Collection of climatic, environmental and archaeological data from the remote southern oceanic island of Rapa Nui is a continuous process. There are many enigmas, such as the unique Moai statuary and sparsity of vegetation. Pollen...
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Collection of climatic, environmental and archaeological data from the remote southern oceanic island of Rapa Nui is a continuous process. There are many enigmas, such as the unique Moai statuary and sparsity of vegetation. Pollen studies concluded that the pre-human island Rapa Nui was dominated by a now extinct palm, Paschalococos disperta. The phytolith research reported here has identified the presence through time of other palm species. Plant biogenic silica phytolith microfossils were extracted from Rano Kau core sediments, a nearby ahu and pan-Pacific palm material for reference purposes. A palm phytolith classification was constructed from the many micrographs produced and all extracted sediment and palm phytoliths were classified and compared visually with each other. Six palm species were identified. Robust identification of these, now extinct on Rapa Nui, palms by phytolith analysis has shown them to belong to extant palm species occurring on Pacific islands in a north-west arc from Rapa Nui and on mainland South America. Data on the current habitats of these palms, when applied to Rapa Nui, has the potential to add to the vegetation and environmental history data base of the island.
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Four samples of trans-free vanaspati were made using palm oil-palm stearin-palm olein (PO-POs-POo) blends (set A) and another four samples (set B) using palm oil-palm stearin-palm kernel olein (PO-POs-PKOo). Palm stearin iodine va...
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Four samples of trans-free vanaspati were made using palm oil-palm stearin-palm olein (PO-POs-POo) blends (set A) and another four samples (set B) using palm oil-palm stearin-palm kernel olein (PO-POs-PKOo). Palm stearin iodine value [iodine Value (IV), 30] and soft palm stearin (IV, 44) were used in this study. The products were evaluated for their physical and chemical properties. It was observed that most of the vanaspati were granular (grainy) and had a shiny appearance. Chemical analyses indicated that vanaspati consisting of PO-POs-POo had higher IV (47.7-52.4) than the PO-POs-PKOo vanaspati (37.5-47.3). The higher IV demonstrated by set A samples was due to their higher content of unsaturated fatty acids, 46.0-50.0% compared to 36.6-45.0% in set B. Decreasing the amount of palm oil while increasing palm stearin in the formulations resulted in higher slip melting points and higher yield values. Eutectic interaction was observed in PO-POs-PKOo blends. The beta' crystalline form was predominent in PO-POs-POo samples (set A). One formulation in set B exhibited beta crystallinity. From the differential scanning calorimetry thermograms, samples in set B showed a high peak at the low-melting region as well as a high peak at the high-melting region. In set A, the peak at the low-melting region was relatively lower.
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This study aimed to describe prospects of utilization of the sugar-palm plant as the raw material of sugar-palm. Data are collected through observations, interviews, and document analysis. The research findings show that cultivati...
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This study aimed to describe prospects of utilization of the sugar-palm plant as the raw material of sugar-palm. Data are collected through observations, interviews, and document analysis. The research findings show that cultivation of sugar-palm trees can be used to meet economic needs of households, particularly for education, health, and social life. The development of sugar-palm trees can be done through the expansion of palm cultivation, counseling and supervising the cultivation of sugar-palm plants to increase juice production, and empowering the business-oriented farmer groups.
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Refined, bleached and deodorized palm olein (RBD POo) with an iodine value (IV) of 62 was chemically interesterified with methyl oleate (MO) at a ratio of 50:50 (w/w). The reaction was carried out at 110 degrees C in the presence ...
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Refined, bleached and deodorized palm olein (RBD POo) with an iodine value (IV) of 62 was chemically interesterified with methyl oleate (MO) at a ratio of 50:50 (w/w). The reaction was carried out at 110 degrees C in the presence of sodium methoxide as a catalyst using a 100-kg pilot scale reactor. Randomization between 15 and 30 min resulted in less free fatty acid (FFA) formation and higher oleic content in the interesterified product as compared to longer reaction time of 60-90 min. Sodium methoxide-catalyzed ester interchange increased the oleic content of the interesterified product to more than 57% from its initial content of 45%. The product obtained also has an IV of more than 75. The interesterified oil was then subjected to dry fractionation in a 200-kg De Smet jacketed crystallizer at 8 degrees C to further enhance the oleic content of the liquid olein fraction. The resulted olein had an improved cloud point and higher IV of 81. The solid stearin had a slightly higher IV and oleic content as compared to normal palm stearin. The solid fat content was comparable to normal palm oil. The pilot scale study has proven a successful conversion of laboratory findings to a larger scale production and gave the most realistic information for possible commercialization. (c)AOCS 2009.
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Palm oil (PO) is widely utilised in the food industry and consumed in large quantities by humans. Owing to its bioactive components, such as fatty acids, carotenoids, vitamin E, and phenolic compounds, PO has been utilised for gen...
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Palm oil (PO) is widely utilised in the food industry and consumed in large quantities by humans. Owing to its bioactive components, such as fatty acids, carotenoids, vitamin E, and phenolic compounds, PO has been utilised for generations. However, public concern about their adverse effects on human health is growing. A literature search was conducted to identify fractionated palm oil processing techniques, proof of their health advantages, and potential food applications. Refined palm oil (RPO) is made from crude palm oil (CPO) and can be fractionated into palm olein (POl) and palm stearin (PS). Fractional crystallisation, dry fractionation, and solvent fractionation are the three basic fractionation procedures used in the PO industry. The composition of triacylglycerols and fatty acids in refined and fractionated palm oil and other vegetable oils is compared to elucidate the triacylglycerols and fatty acids that may be important in product development. It is well proven that RPO, POl, and PS extends the oil's shelf life in the food business. These oils have a more significant saturated fat content and antioxidant compounds than some vegetable oils, such as olive and coconut oils, making them more stable. Palm olein and stearin are also superior shortening agents and frying mediums for baking goods and meals. Furthermore, when ingested modestly daily, palm oils, especially RPO and POl, provide health benefits such as cardioprotective, antidiabetic, anti-inflammatory, and antithrombotic effects. Opportunities exist for fractionated palm oil to become a fat substitute; however, nutrition aspects need to be considered in further developing the market.
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Tropical forests harbor thousands of useful plants that are harvested and used in subsistence economies or traded in local, regional or international markets. The effect on the ecosystem is little known, and the forests resilience...
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Tropical forests harbor thousands of useful plants that are harvested and used in subsistence economies or traded in local, regional or international markets. The effect on the ecosystem is little known, and the forests resilience is badly understood. Palms are the most useful group of plants in tropical American forests. This paper introduces a cross-disciplinary study of the effects of harvesting palm products from the tropical forests in north-western South America. The size of the resource is estimated through palm community studies in the different forest formations that determines the number of species and individuals of all palm species. The genetic structure of useful palm species is studied to determine how much harvesting of the species contributes to genetic erosion of its populations, and whether extraction can be made without harm. Almost all palm species are used in rural communities for subsistence purposes Quantitative ethno-botanical research in different forest types have identified thousands of different ways of using palms for food, construction, tool-making, etc. Although most palms are used by the person harvesting them, many are sold on local markets as fruits, fiber, tools, construction materials etc., and a few have reached larger markets, including international markets. Palm populations are managed in various ways of which some are sustainable and others are destructive. National level mechanisms that governs extraction, trade and commercialization of palm products, are used to identify positive and negative policies in relation to resilience of ecosystems.
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Purpose With increasing attention on sustainable develop ment, the environmental and social relevance of palm oil production are now important trade issues. The life cycle assessment (LCA) study of Malaysian oil palm products f...
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Purpose With increasing attention on sustainable develop ment, the environmental and social relevance of palm oil production are now important trade issues. The life cycle assessment (LCA) study of Malaysian oil palm products from mineral soils including palm biodiesel was aimed to provide baseline information on the environmental perfor mance of the industry for drawing up policies pertaining to the sustainable production. The share of greenhouse gas (GHG) contribution by the various subsystems in the oil palm supply chain is considered here. Materials and methods The life cycle inventory data for the study were collected based on subsystems, i.e., gate-to-gate. The subsystems include activities in oil palm nurseries and plantations, palm oil mills, refineries, biodiesel plants and the use of biodiesel in diesel engine vehicles. Two scenarios were considered: extraction of crude palm oil (CPO) in a mill without and with a system for trapping biogas from palm oil mill effluent (POME). Inventory data were collected through questionnaires. On-site visits were carried out for data verification. Background data for resource exploitation and production of input materials were obtained through available databases and literature. Foreground data for all subsystems were site-specific data from nurseries, plantations, palm oil mills and refineries and biodiesel plants in Malaysia. Results and discussion Using a yield of 20.7 t oil palm fresh fruit bunches (FFB)/ha, the results showed that the production of 1 t of FFB produced 119 kg CO_2 eq. The production of 1 t of CPO in a mill without and with biogas capture emitted 971 and 506 kg CO_2 eq, respectively. For the production of 1 t of refined palm oil in a refinery which sourced the CPO from a mill without biogas capture and with biogas capture, the GHG emitted was 1,113 kg and 626 kg CO_2 eq, respectively. For palm biodiesel, 33.19 and 21.20 g CO_2 eq were emitted per MJ of biodiesel produced from palm oil sourced from a mill without and with biogas capture, respectively. Conclusions GHG contribution by the nursery subsystem was found to be minimal. In the plantation subsystem, the major sources of GHG were from nitrogen fertilizers, transport and traction energy. For the mill, biogas from POME was the major contributor if biogas was not trapped. Excluding contribution from upstream activities, boiler fuel and transport were the major sources of GHG in the refinery subsystem. In the biodiesel subsystem, activities for production of refined palm oil and methanol use were the most significant contributors.
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Background, Goal and Scope. The palm oil industry is one of the leading industries in Malaysia. With a yearly production of more than 13 million tons of crude palm oil (CPO) and plantations covering 11% of the Malaysian land area ...
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Background, Goal and Scope. The palm oil industry is one of the leading industries in Malaysia. With a yearly production of more than 13 million tons of crude palm oil (CPO) and plantations covering 11% of the Malaysian land area it is an industry to be reckoned with, also when it comes to environmental impacts. One way to describe and present the environmental impacts is through a life cycle assessment, LCA. This assessment aims to introduce the concept of LCA and perform a screening LCA on crude palm oil production in Malaysia including the stages of plantation, transport and milling. The assessment is largely based on general data and is thus meant to function as an indication of the environmental threads posed by CPO production and as a guideline to CPO producers and local universities on how to perform an LCA on a palm oil scenario. Due to the general data background the results of this report should not be quoted directly for decision making. The Functional Unit, to which all masses and emissions in this assessment have been adjusted, is the production of 1000 kg of CPO in Malaysia. Method. Initially an overview of palm oil production was obtained and the outlines and borders of the assessment were determined along with the specific goal and scope of the assessment. The data for the assessment was collected from three different sources: 1. Earlier studies and statistics on palm oil production in Malaysia 2. Studies on similar processes, when palm oil related processes were not available 3. General data from the SimaPro 5 database The European Eco-Indicator 99 method and European databases included in the LCA software SimaPro 5 have been used for the impact calculations. Results and Discussion. The impact processes related to the plantation are the on-site energy use (mainly diesel) and the production of artificial fertilizer. Pesticide use contributes a minor impact due to widely used integrated biological poet management. For transportation the only impact is from combustion of diesel and at the mill the boiler is the sole significant contributor -positively through electricity production and negatively by emissions from the boiler. Impacts from POME (Palm Oil Mill Effluent) are not dealt with in the main assessment, but touched upon in alternative scenarios. The results clearly show that fertilizer production is the most polluting process in the system followed by transportation and the boiler emissions at a tie. The most significant impacts from the system are respiratory inorganics and depletion of fossil fuels, of which the boiler emis- sion is the main responsible for the prior and fertilizer production and transportation are responsible for the latter. It is also evident from the results that crude palm oil production is a significant environmental impact generator in Malaysia due to the vast production quantities. Alternative scenarios revealed that there are significant impact savings to be made by introduction of environmental investments, both regarding the overall impacts and in particularly regarding CO, emissions. Conclusion. A screening LCA was successfully conducted on the Malaysian crude palm oil production thus promising potentials for the palm oil industry to conduct their own inventories and assessments using specific company data. Crude palm oil production in Malaysia is responsible for app. 3.5% of the total environmental impacts in the country and must thus be given attention to reduce impacts. Alternatives such as optimized use of organic fertilizer, environmentally friendlier artificial fertilizer production, rail transport, approved filters at the mill boiler stack and biogas harvest from POME digestion must thus be promoted in the industry. Recommendations. The Malaysian palm oil industry should take steps towards introducing LCA. Exhaustive inventories are likely to open the eyes of many companies towards implementing environmental investments and improve the international competitiveness.
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The study which compared the potentials of oil palm wine (OPW) and raphia palm wine (RPW) in South East, Nigeria was informed by the vast nutritional and economic values of the products, their potentials for poverty alleviation an...
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The study which compared the potentials of oil palm wine (OPW) and raphia palm wine (RPW) in South East, Nigeria was informed by the vast nutritional and economic values of the products, their potentials for poverty alleviation and dearth of information on the economics of marketing of the products in the area. The study specifically described the different ways in which oil palm wine and raphia palm wine can be utilized and also identified the differences and similarities in the utilization of both wines. The study population comprised all the oil palm wine and raphia palm wine consumers in South East, Nigeria. Purposive and random sampling techniques were used to select 150 respondents for the study. Primary data used for the study were analyzed using descriptive statistics. Palm wine has best potentials for use in refreshment, followed by ceremonies, traditional medicine, as raw materials, libation, lactation, and least weaning. Innovations such as use of hybrid plants, accurate plant spacing, new and efficient ways of tapping by associated Research Institutes in the country will help boost production.
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The process of making jaggery from three natural juices by boiling could be divided into three zones: rise in temperature to boiling (Zone I), slow rise in both boiling temperature and total soluble solids (TSS) (Zone Ⅱ) followed...
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The process of making jaggery from three natural juices by boiling could be divided into three zones: rise in temperature to boiling (Zone I), slow rise in both boiling temperature and total soluble solids (TSS) (Zone Ⅱ) followed by rapid rise in boiling temperature with concomitant increase in viscosity and TSS (Zone Ⅲ). The juice samples in Zone Ⅲ exhibited changes in boiling temperature, viscosity and TSS from 105 to 121℃, 4.5 to 988 mPa sand 54.6 to 81.9 (%w/w) for sugarcane (Saccharum officinarum); from 104 tol20℃, 41.6 to 559 mPa s and 46 to 81 (% w/w) for palmyra-palm (Borassus flabellifer L); and from 103 to 121℃, 22.9 to 417 mPa s and 51 to 81 (% w/w) for date-palm {Phoenix sylvestris L). Colour change (△E/△(%W/W)Zone Ⅲ. Difference in colour among these jaggery samples might be attributed to amount of reducing sugars present initially and respective changes in properties during juice concentration.
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