Technical news feature

Soybeans from different maturation stages were tested for their chemical composition and storage stability. Maturation was arrested at specified times by spraying paraquat on the plant. The same level of trypsin inhibitor activity was found regardless of maturation. However, the lipoxygenase activity and phytate content were significantly lower in immature beans. Crude oil and protein contents were similar, regardless of maturation. The crude oils from immature samples were greener in color and higher in free fatty acid content than those from mature ones. Both yield of isolated soy protein and ratio of 7S to 11S protein in immature soybeans were lower than that from mature soybeans. During storage, lipoxygenase activity decreased independently of maturation but free fatty acid content in the crude oil increased at a faster rate in immature beans than that from mature ones.     

Technical news feature

Conclusion PORIM can look back at its first six years of existence with pride. It is now permanently housed in its own buildings on a site which provides pleasant working conditions. It has recruited a large, well qualified and enthusiastic staff. This rapid progress is due mainly to the unanimous support and collaboration of the industrial and government organizations involved. Significant contributions to the technology of the industry are being made, and the institute is established on the international scene. However, both individual scientists and PORIM are more interested in the future. They are confident of making continued contributions to the production and use of basic foodstuff which is economical for the world population and of major economic importance to Malaysia.     

Technical news feature

Palm oil utilization is contingent on three key factors-economic advantage, standards of quality, and customer acceptance. In order to provide acceptable quality palm oil for direct use of as a portion of a formulation, the oil is pretreated, steam refined, bleached, and deodorized. A Parkson stripper is employed for steam refining which, with the pretreatment described, results in yields of the weight of crude oil minus 1.19 x the free fatty acid expressed as oleic and finished oil colors ranging from 1.0–2.5 Red Lovibind. Potential color problems can be avoided by ensuring that all storage and processing conditions are controlled.     

Technical news feature

News

Technical news feature Palm carotenoids, tocopherols and tocotrienols     

Technical new feature

A continuous process for the commercial production of isopropenyl stearate (IPS) from triple pressed stearic acid and a stabilized form of propyne has been developed. Cost estimates, including capital costs, operating costs, and profitability, for commercial scale plant production which show the process to be economically feasible are presented. This potentially profitable process offers the advantages of reliable raw material sources, minimal external thermal requirements, and usable process waste streams. For a plant producing 5 million pounds of IPS per year, the selling price range is 80 to 107 cents/lb IPS, corresponding to a raw material cost range of 27 to 54 cents/lb of IPS. For a 20 million pound per year plant, the selling price range is 58 to 85 cents/lb IPS. The selling prices include a 20% annual return on fixed capital investment. Fixed capital requirement ranges from 2.7 to 10.9 million dollars (3rd quarter, 1975) for plants ranging in size from 5 to 50 million pounds of IPS per year, respectively.     

Jaocs news feature: malaysian palm oil

Palm oil is growing rapidly in importance as an export oil. The Malaysian palm oil development is described, and predictions are that it will supply 1,400,000 tons of oil by 1975 and 1,750,000 tons by 1980. Production in 1971 was ca. 580,000 tons. Presented at the 49th Annual Congress of the International Association of Seed Crushers, Kyoto, Japan, May 1972.     

Laocs news feature Shortages and regulations: headaches for toilet soap formulators

The formulator is faced with shortages in soap stock fats and oils and must juggle the merits and costs of less common oils, lower grade greases, and synthetics as substitutes for familiar beef tallow and coconut oil. Best compromises must be made by the perfumer for essential oils no longer obtainable to maintain quality and to preserve the odor image of soap products. The formulator must have in vitro, in vivo, and safety data for soap additives. All through development, the formulator must remember that, having made it, he must prove it. Efficacy tests must be more detailed and closer and closer to life.     

6．25m捣固焦炉的技术特点及工艺分析

唐山佳华6．25m捣固焦炉在治理装煤烟尘外逸的设计中,采用将装煤饼时产生的烟气导入相邻炭化室．焦炉上升管移至焦侧等措施,使焦炉投产后达到炉顶零泄漏、机侧基本无烟气外泄的良好效果。在工艺设计上注重了炉体加热的均匀性与炉体强度的安全性,以及对煤饼的稳定性和护炉铁件强度等问题。在焦炉机械配置和形式上突破了国内原有的模式,采用了全新可靠的现代化设计与制造,保证了6．25m大型捣固焦炉的顺利投产。     

Jaocs news feature: Collaborative study of the determination of total oil in sunflower seed

A collaborative study was made of two methods for determining the total oil content of sunflower seed. The seed of three sunflower varieties of low, medium, and high oil content were analyzed on different days by 12 collaborators. In one method, the sunflower seeds were ground with an equivalent wt of diatomaceous earth. In the second method, the seeds were ground with a high-speed grinder without diatomaceous earth. The method using diatomaceous earth in the grinding of the seed gave a significantly higher oil content for all three varieties. It was recommended that total oil on a per cent dry wt basis be calculated from the moisture determination of the whole seed and not from the moisture of ground sample, which was too variable.     

我国大容积捣固焦炉的技术特点及装备水平

通过对6．25m捣固焦炉和5．5m捣固焦炉的工艺参数、工艺流程、焦炉炉体、焦炉机械、TZ装备、焦炉环保、炉型成熟性和投资等方面的分析,详细阐述了国内几种典型大容积捣固焦炉的技术特点、装备水平及其发展历程,并为建设大容积捣固焦炉提供了参考意见。