Benders'dictionary of nutrition and food technology

335nor- Chemical prefix to the name of a compound indicating:(1) One methyl (CH 3 ) group has been replaced by hydrogen(e.g. noradrenaline can be considered to be a demethylatedderivative of adrenaline).(2) A homologue of a compound containing one methylene(CH 2 ) group fewer than the parent compound.(3) An isomer with an unbranched side-chain (e.g. norleucine,norvaline).noradrenaline Hormone secreted by the adrenal medullatogether with adrenaline; also a neurotransmitter. Physiologicaleffects similar to those of adrenaline. Also known asnorepinephrine.norconidendrin See conidendrin.nordihydroguaiaretic acid (NDGA) Extracted from the creosotebush, Larrea divaricata (Covillea tridentata); used as an antioxidantfor fats.norepinephrine See noradrenaline.nori Edible seaweed, Porphyra umbilicalis.norite Activated charcoal used to decolourise solutions.norleucine 2-Aminohexanoic acid, a non-physiological aminoacid, an unbranched isomer of leucine, commonly used as aninternal standard in amino acid analysis.northern blot See blotting.notatin See glucose oxidase.nougat Sweetmeat made from a mixture of gelatine or eggalbumin with sugar and starch syrup, and the whole thoroughlyaerated. Originated in Montelimar in southern France.Novadelox TM Benzoyl peroxide used for treating flour,see ageing.novain Obsolete name for carnitine.novel foods Foods and food ingredients consisting of, or containing,chemical substances not hitherto used for human consumptionto a significant extent in the locality in question (includingmicro-organisms, fungi or algae and substances isolated fromthem, and organisms obtained using genetic modification techniques).Afood or ingredient to which has been applied a processnot currently used for food manufacture or which has not beenpreviously marketed and which gives rise to changes that affectits nutritional value or safety.See also substantial equivalence.Novelose TM A preparation of resistant starch. See starch,resistant.NPR Net protein ratio, a measure of protein quality.NPU Net protein utilisation, a measure of protein quality.NPV Net protein value, a measure of protein quality.