Cadmium Tolerance and Accumulation in Wild Rice Species     

Ayotunde A.ADEOSUN  Adam H.PRICE  Gareth J.NORTON 《水稻科学》2023,30(3):181-191

<正>When exposed to cadmium(Cd), rice(Oryza sativa L.) suffers a loss in biomass as well as an increased concentration of Cd within the plant. When looking for genes that can reduce Cd accumulation or increase Cd tolerance, the wild relatives of rice are under-utilised resources. In this study, a rapid hydroponic screening system was established using known tolerant and sensitive O. sativa accessions,  相似文献   

Comparison of Yield and Composition of Oil Extracted from Corn Fiber and Corn Bran     

Robert A. Moreau  Vijay Singh  Steven R. Eckhoff  Michael J. Powell  Kevin B. Hicks  Robert A. Norton 《Cereal Chemistry》1999,76(3):449-451

We recently reported that corn fiber oil contains high levels of three potential cholesterol-lowering phytosterol components: ferulate-phytosterol esters (FPE) (3–6 wt%), free phytosterols (1–2 wt%), and phytosterol-fatty acyl esters (7–9 wt%). A previous study also indicated that corn bran oil contained less phytosterol components than corn fiber oil. The current study was undertaken to attempt to confirm this preliminary observation using more defined conditions. Accordingly, oil was extracted from corn fiber and corn bran prepared under controlled laboratory conditions, using the same sample of corn hybrid kernels for each, and using recognized bench-scale wet-milling, and dry-milling procedures, respectively. After extraction, the chemical composition of the phytosterol components in the oil were measured. This study confirmed our previous observation—that FPE levels were higher in corn fiber oil than in corn bran oil. During industrial wet-milling, almost all of the FPE are recovered in the fiber fraction (which contains both fine and coarse fiber). During laboratory-scale wet-milling, ≈60–70% of the FPE are recovered in the coarse fiber (pericarp) and 30–40% are recovered in the fine fiber. During laboratory-scale dry-milling, <20% of the FPE are recovered in the bran (pericarp), and the rest in the grits. The recoveries of the other two phytosterol components (free phytosterols and phytosterol-fatty acyl esters) revealed a more complex distribution, with significant levels found in several of the dry- and wet-milled products.  相似文献