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Benders'dictionary of nutrition and food technology

Benders'dictionary of nutrition and food technology

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457sulphuring (sulfuring) Preservation by treatment with sulphurdioxide or sulphites; also used for treatment <strong>of</strong> vegetables priorto dehydration to prevent browning reactions.sultanas Made by drying the golden sultana grapes grown inTurkey, Greece, Australia <strong>and</strong> S. Africa; the bunches are dippedin alkali, washed, sulphured <strong>and</strong> dried. Sultanas <strong>of</strong> the Europeantype produced in the USA are termed seedless raisins.See also currants, dried; raisin.summer pudding Cold sweet <strong>of</strong> stewed fruit cased in bread orsponge cake.sum-sum See sesame.Sunett TM See acesulphame k.sunflower Annual plant, Helianthus annuus. Seeds used for oil;11% saturated, 20% mono-unsaturated, 69% polyunsaturated,contains 41.1 mg vitamin E, 5.4 mg vitamin K/100 g.Seeds, composition/100 g: (edible portion 54%) water 5.4 g,2386 kJ (570 kcal), protein 22.8 g, fat 49.6 g (<strong>of</strong> which 11% saturated,20% mono-unsaturated, 69% polyunsaturated), carbohydrate18.8g (2.6g sugars), fibre 10.5g, ash 3.5g, Ca 116mg, Fe6.8 mg, Mg 354 mg, P 705 mg, K 689 mg, Na 3 mg, Zn 5.1 mg, Cu1.8mg, Mn 2mg, Se 59.5µg, vitamin A 3µg RE (30µgcarotenoids), E 34.5 mg, K 2.7 mg, B 1 2.29 mg, B 2 0.25 mg, niacin4.5 mg, B 6 0.77 mg, folate 227 µg, pantothenate 6.7 mg, C 1 mg. A15 g serving is a source <strong>of</strong> Mg, Mn, P, Se, folate, pantothenate, agood source <strong>of</strong> Cu, vitamin B 1 ,a rich source <strong>of</strong> vitamin E.sunlight flavour Name given to unpleasant flavours developing in<strong>food</strong>s after exposure to sunlight. In milk it is said to be due tothe oxidation <strong>of</strong> methionine in the presence <strong>of</strong> rib<strong>of</strong>lavin(vitamin B 2 ). At the same time rib<strong>of</strong>lavin undergoes photolysisto metabolically inactive lumichrome, so a significant loss <strong>of</strong> thevitamin can occur when milk is exposed to sunlight. In beer dueto a change in the bitter principles from the hops.superchill Cool to −1 to −4°C (chill temperature is usually 2°C).supercooled liquid One that remains a liquid below its normalfreezing point.supercooling A phenomenon in which a liquid does become solideven though the temperature is below its freezing point.supercritical fluid extraction Technique for extraction especially<strong>of</strong> non-polar compounds, e.g. decaffeination <strong>of</strong> c<strong>of</strong>fee. A gas(commonly carbon dioxide) is compressed to above its criticalpressure, but above its critical temperature, to yield a supercriticalfluid with physical properties intermediate between those<strong>of</strong> a dense gas <strong>and</strong> a liquid with low viscosity <strong>and</strong> surfacetension, high solvating properties <strong>and</strong> a high diffusion constant<strong>of</strong> solutes.

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