Peaches content

Potassium nitrate is being used increasingly on intensive crops such as tomatoes, potatoes, tobacco, leafy vegetables, citms, and peaches. The properties that make it particularly desirable for these crops are low salt index, nitrate nitrogen, favorable N K20 ratio, negligible CU content, and alkaline residual reaction in the soil. The low hygroscopicity of KNO (Table 9) leads to its use in direct appHcation and in mixtures. It is an excellent fertilizer but the high cost of production limits its use to specialty fertilizers. 

Fenpyroximate exhibits acaricidal and knockdown activities on phytophagous mites, such as Tetranychus urticae Koch (two-spotted spider mite) and Panony-chus citrP in citrus, apple, pear, peach, grape, etc. Fenpyroximate inhibits the mitochondrial NADH-Co Q reductase, which induces a decrease in ATP content and morphological changes in mitochondria and ultimately shows the acaricidal and knockdown activities. ... 

Wright KP and Kader AA. 1997. Effect of controlled-atmosphere storage on the quality and carotenoid content of sliced persimmons and peaches. Postharvest Biol Technol 10 89-97. 

Gil MI, Tomas-Barberan FA, Hess-Pierce B and Kader AA. 2002. Antioxidant capacities, phenolic compounds, carotenoids, and vitamin C contents of nectarine, peach, and plum cultivars from California. J Agric Food Chem 50(17) 4976-4982. 

Wright and Kader reported that there were no significant changes in the (3-carotene content of sliced peach fruit over the time of storage (Wright and Kader 1997a), with the exception of fruit stored under air + 12% CO2 the treatment resulted in a... 

Over 2,650 plant species can produce hydrogen cyanide (Seigler 1991 Swain et al. 1992). These include edible plants such as almonds, pits from stone fruits (e.g., apricots, peaches, plums, cherries), sorghum, cassava, soybeans, spinach, lima beans, sweet potatoes, maize, millet, sugarcane, and bamboo shoots (Fiksel et al. 1981). The cyanogenic glycoside content of a foodstuff is usually expressed as the amount of cyanide released by acid hydrolysis glycoside concentrations are rarely reported (WHO 1992). 

Quercetin is the most common flavonol in fruits, elderberries (17.0 mg/100 g), lingonber-ries (12.6 mg/100 g), and cranberries (13.0 mg/100 g) being particularly rich sources. Berries and currants are also the fruits containing most kaempferol and myricetin. For example, these two flavonols account for 29 and 18%, respectively, of the total flavonol content of the bilberry. Although kaempferol and myricetin have also been identified in fruits such as peaches and pears, concentrations are generally too low to be readily quantified in the whole fruit. The skin of these fruits contains these flavonols in significant amounts however, their flesh, which constitutes >70% of the fresh weight, does not. Consequently, when analyzed as normally eaten only trace levels are present. 

Since the moisture content of raw fruits varies widely, it is difficult to express typical values for water contents for various fruits. Amerine and Joslyn (2) stated that water in grapes ranges from 70 to 85%. The moisture content of several tree fruits grown in British Columbia was reported by Strachan et al. (4). The approximate moisture contents included apple, 85.1% pear, 83.9% peach, 86.9% and cherry, 78.4%. 

These are some examples of the use of i.r. spectra in the analysis and identification of carbohydrates in foods and natural products. Very often, these spectroscopic techniques are complementary to others, such as the study of aldobiouronic acids obtained by hydrolysis of peach-gum polysaccharides by their optical rotations and their i.r. spectra.100 However, the i.r. results appear to be sufficiently reliable to be used in the detection of traces of fructose and glucose, and to determine the d.e. (dextrose equivalent) of corn syrups, as well as the quantitative carbohydrate content in different products.101... 

Low pantothenic acid content (0.1-0 5 milligram/100 grams) Almond, apple, banana, bean (kidney), cabbage, grape, grapefruit, honey, lemon, lettuce, lobster, milk, molasses, onion, orange, oyster, peach, pear, pepper (white and sweet), pineapple, plum, potato, shrimp, tomato, turnip, veal, watercress. 

Medium vitamin A and procarotenoids content (1,000-10,000 I. U./100 grams). Apricot, beet greens, broccoli, butter, chard, cheese (except cottage), cherry (sour), chicory, chives, collards, cream, eel. egg yolk, endive, fennel, kale, kidney (beef. pig. sheep), leek greens, lettuce (butterhead and romaine), liver (pork), mango, margarine, melons (yellow), milk (dried), mustard, nectarine, peach, pumpkin, squash (acorn, butternut, hnbhard), sweet potato, tomato, watercress, whitefish. 

Low pyridoxine content (10-100 micrograms/100 grams). Apple, as paragus, bean, beet greens, cantaloupe, chccsc, cherry, currant (red), giapefiuit, lemon, lettuce, milk, onion, orange, peach, raisin, strawberry, watermelon. 

A pit of a stone fruit consists of a hard shell which contains very little free water, and an inside seed with high water and oil content The pit and the seed in peach, olive and prune are visible in an NMR image [14]. This means that the unpitted olive which has the image of a dark ring of pit shell and a bright image of the seed inside the shell can be discriminated from the pitted olive which has the image of a dark spot at the center of the fruit where the cavity is. 

NIR has been applied for determining dry matter of onion [11], soluble solids of cantaloupe [12], and sugar contents of peach [13] and Satsuma mandarin [14],... 

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