The industrial chemistry of oils and fats is a mature technology, with decades of experience and refinement behind current practices, therefore some physico-chemical characteristics of eleven vegetable oils sunflower ...The industrial chemistry of oils and fats is a mature technology, with decades of experience and refinement behind current practices, therefore some physico-chemical characteristics of eleven vegetable oils sunflower oil （four different manufacturing companies）, olive oil （three different manufacturing companies）, corn oil, castor oil, coconut oil and canola oil in Iraqi Kurdistan region （Hawler city center） have been evaluated according to association of official analytical chemists （AOAC） （1995） official methods. The refractive index, viscosity, acid value, peroxide value, pH values, and values of specific gravity of the vegetable oil samples were measured at various different conditions. The results showed that some of the oil samples have unacceptable values in comparison with the standards.展开更多
This paper reviews results of some morphometric properties and chemical analyses of natural populations of the Cornelian cherry collected in the Vojvodina Province in 2008. Purpose of this study was the selection of t...This paper reviews results of some morphometric properties and chemical analyses of natural populations of the Cornelian cherry collected in the Vojvodina Province in 2008. Purpose of this study was the selection of the best genotypes for future breeding program until the final goal and that is standardizing Cornelian cherry cultivars. Chemical content has been found to depend on the genotype. Total sugar content in fruits ranged from 11.77% （CPC16） to 41.62% （BPC7）, vitamin C from 17.15 mg/100 g （APC8） to 42.30 rag/100 g of fresh fruit （APC2）, Ca pectat from 0.17% （APC6） to 2.52% （KC 1 ） and anthocyanin from 22.65 mg/100 g （APC4）to 96.30 rag/100 g of fresh fruit （BPC1）. Cornelian cherry fruits have an especially high content of minerals compared with other fruit species： the potassium content （in ppm） ranges from 2330 （APC6） to 11487 （APC4）, the calcium content from 33.80 （APC6） to 1307.70 （BPC1）, the sodium content from 22.82 （BPC8） to 273.48 （APC8）, the magnesium content from 10.20 （APC6） to 372.80 （APC8） and the iron content from 2.38 （KC2） to 14.40 （APCS）. The balanced content of nutrients, a wide range of food products made from the Cornelian cherry and an extremely high nutritional value make this fruit species a highly recommendable food item, especially if it comes from organic production.展开更多
Formation and preservation of greigite can indicate the physicochemical characteristics of sedimentary environment. Presence of greigite can be diagnosed in the late Pleistocene fluvio-lacustrine sedimentary layers of...Formation and preservation of greigite can indicate the physicochemical characteristics of sedimentary environment. Presence of greigite can be diagnosed in the late Pleistocene fluvio-lacustrine sedimentary layers of 29.4–29.7 and 26.1–27.1 m in core ZK30 of the Yellow River delta, based on analysis of particle size, magnetic properties, scanning electron microscope(SEM) and X-ray diffraction(XRD) measurements. These layers are the transition zones from shallow marine facies to fluvio- lacustrine facies, and from fluvio-lacustrine facies to salt marsh facies in an ascending order, respectively. They are characterized by higher SIRM and SIRM/χ(>30 kA m-1) values than those of other layers, suggesting the possible existence of greigite. Both SEM and XRD analyses confirm its presence. However, sediment layer of 29.4–29.7 m are coarser, and greigite coexists with pyrite, but sediment layer of 26.1–27.1 m are finer and the occurrence of greigite is not accompanied by pyrite. The different occurrence of greigite in the two layers suggests that different climate condition and sedimentary environment control its formation and preservation.展开更多
文摘The industrial chemistry of oils and fats is a mature technology, with decades of experience and refinement behind current practices, therefore some physico-chemical characteristics of eleven vegetable oils sunflower oil （four different manufacturing companies）, olive oil （three different manufacturing companies）, corn oil, castor oil, coconut oil and canola oil in Iraqi Kurdistan region （Hawler city center） have been evaluated according to association of official analytical chemists （AOAC） （1995） official methods. The refractive index, viscosity, acid value, peroxide value, pH values, and values of specific gravity of the vegetable oil samples were measured at various different conditions. The results showed that some of the oil samples have unacceptable values in comparison with the standards.
文摘This paper reviews results of some morphometric properties and chemical analyses of natural populations of the Cornelian cherry collected in the Vojvodina Province in 2008. Purpose of this study was the selection of the best genotypes for future breeding program until the final goal and that is standardizing Cornelian cherry cultivars. Chemical content has been found to depend on the genotype. Total sugar content in fruits ranged from 11.77% （CPC16） to 41.62% （BPC7）, vitamin C from 17.15 mg/100 g （APC8） to 42.30 rag/100 g of fresh fruit （APC2）, Ca pectat from 0.17% （APC6） to 2.52% （KC 1 ） and anthocyanin from 22.65 mg/100 g （APC4）to 96.30 rag/100 g of fresh fruit （BPC1）. Cornelian cherry fruits have an especially high content of minerals compared with other fruit species： the potassium content （in ppm） ranges from 2330 （APC6） to 11487 （APC4）, the calcium content from 33.80 （APC6） to 1307.70 （BPC1）, the sodium content from 22.82 （BPC8） to 273.48 （APC8）, the magnesium content from 10.20 （APC6） to 372.80 （APC8） and the iron content from 2.38 （KC2） to 14.40 （APCS）. The balanced content of nutrients, a wide range of food products made from the Cornelian cherry and an extremely high nutritional value make this fruit species a highly recommendable food item, especially if it comes from organic production.
基金supported by the National Natural Science Foundation of China(Grant Nos.41030856,41176039,41376054 and 41030856)the Natural Science Foundation of Shandong Province(Grant No.2011ZRE29040)
文摘Formation and preservation of greigite can indicate the physicochemical characteristics of sedimentary environment. Presence of greigite can be diagnosed in the late Pleistocene fluvio-lacustrine sedimentary layers of 29.4–29.7 and 26.1–27.1 m in core ZK30 of the Yellow River delta, based on analysis of particle size, magnetic properties, scanning electron microscope(SEM) and X-ray diffraction(XRD) measurements. These layers are the transition zones from shallow marine facies to fluvio- lacustrine facies, and from fluvio-lacustrine facies to salt marsh facies in an ascending order, respectively. They are characterized by higher SIRM and SIRM/χ(>30 kA m-1) values than those of other layers, suggesting the possible existence of greigite. Both SEM and XRD analyses confirm its presence. However, sediment layer of 29.4–29.7 m are coarser, and greigite coexists with pyrite, but sediment layer of 26.1–27.1 m are finer and the occurrence of greigite is not accompanied by pyrite. The different occurrence of greigite in the two layers suggests that different climate condition and sedimentary environment control its formation and preservation.
