Vegetables green beans

Green vegetables, such as broccoli, spinach, and green beans, that contain a high diversity of xanthophylls and carotenes... 

In total, 12,264 samples were collected and analyzed for pesticide residues in the 2001 PDP (USDA, 2003). Specific fruits and vegetables analyzed in the 2001 PDP included apples, bananas, broccoli, carrots, celery, cherries, grapes, green beans, lettuce, mushrooms, nectarines, oranges, peaches, pineapples, potatoes, canned sweet corn, canned sweet peas, and canned tomato paste. Fruits and vegetable samples were taken most commonly (9903 samples), followed by beef (911 samples), enriched milled rice (689 samples), poultry (464... 

Malonaldehyde has been detected in the leaves of pea and cotton plants. It is found in many foodstuffs and can be present at high levels in rancid foods. It has been detected in fish meat, fish oil, rancid salmon oil, rancid nuts, rancid flour, orange juice essence, vegetable oils, fats, fresh frozen green beans, milk, milk fat, lye bread and in raw, cured and cooked meats (United States National Library of Medicine, 1997). 

Preservatives. Sulfur compounds, such as sulfur dioxide and sodium bisulfite, are used commercially to preserve the color of various food products, such as orange juice, dehydiated fruits and vegetables, such as apricots, carrots, peaches, pears, potatoes, and many odiers. Concentrated sulfur dioxide is used in wine-making to destroy certain bacteria. The color preservation of canned green beans and peas is enhanced by dipping the produce in a sulfite solution prior to canning. In 1986, some of these compounds and uses were put under closer regulation in the United States. 

An HPLC separation method with diode array detector and mass spectrometric (MS) detection equipped with atmospheric pressure ionization (API) was developed to determine flavone, flavonol, and flavanone in various vegetables, including green bean, broccoli, brussels sprouts, celery, kale, leek, onion, parsley, pepper (green, yellow, and red), and tomato (118). The flavonoids were analyzed as aglycones after acid hydrolysis. The extraction and acid hydrolysis conditions are based on previous work by Hertog et al. (119). Quercetin is the overall major flavonol, followed by kaempferol. The flavones, apigenin and luteolin, were found only in limited foods,... 

Carrots (strained) Spinach (strained) Green beans (strained) Squash (strained) Vegetables and ham Vegetables and chicken Apple juice (strained) Teething biscuits Fruit pudding (strained) Beef (strained)... 

Other vegetables summer squash, pickles, turnips, beets, cucumbers, celery, olives, oils, brussels sprouts, iceberg lettuce, green peppers, mixed vegetables, asparagus, green beans, sauerkraut, and onions... 

These data suggest that those vegetable products most likely to be contaminated with a mix of pesticides are green peppers, celery, tomato, spinach, mixed vegetables, lima beans, collards, green beans, brussels sprouts, potato with skin, and iceberg lettuce. All of these products purchased as USDA certified organic foods would not be expected to contain these pesticides. 

O Cocoa, hazelnut, dark chocolate, I green vegetables (haricot beans) [... 

In 1998, PDP collected samples of apple juice, cantaloupe, grape juice, green beans, orange juice, pears, spinach, strawberries, sweet potatoes, tomatoes, winter squash, com symp, milk, and soybeans. A total of 8500 samples were collected. Most of these were from fmits and vegetables (7017) with lower numbers of samples collected for whole milk (595), soybeans (590) and com symp (298). The majority of samples (84 percent) was of domestic origin. Overall, 45 percent of the samples contained no detectable residue while 26 percent contained one residue and 29 percent contained more than one residue. Residues exceeding the tolerance level were detected on 0.15 percent of the samples. In another 3.7 percent of the samples, residues of pesticides were detected on commodities for which no tolerances of the pesticides were established (USDA, 2000). 

Co uptake by plants is species dependent. It is hardly detectable in green beans however it is present in low concentrations in radishes, although it has been found in leaves of the plant (Kloke, 1980). Co is acccumulated in considerably lower concentrations in the plant storage organs or seeds as compared with the vegetative parts. 

The development of a characteristic, objectionable, beany, grassy, and hay-like flavor in soybean oil, commonly known as reversion flavor, is a classic problem of the food industry. Soybean oil tends to develop this objectionable flavor when its peroxide value is still as low as a few meq/kg, whereas other vegetable oils, such as cottonseed, com, and sunflower, do not (15, 51). Smouse and Chang (52) identified 71 compounds in the volatiles of a typical reverted-but-not-rancid soybean oil. They reported that 2-pentylfuran formed from the autoxidation of linoleic acid, which is the major fatty acid of soybean oil, and contributes significantly to the beany and grassy flavor of soybean oil. Other compounds identified in the reverted soybean oil also have fatty acids as their precursors. For example, the green bean flavor is caused by c/i-3-hexenal, which is formed by the autoxidation of linolenic acid that usually constitutes 2-11% in soybean oil. Linoleic acid oxidized to l-octen-3-ol, which is characterized by its mushroom-like flavor (53). 

Green beans, which have less surface area than the leafy vegetables, stored at 10°C for 24 h, lost only 10% of their ascorbic acid concentrations, but when stored at room temperature for the same time, lost 24% of their ascorbic acid concentration (35,63). Only minor losses of ascorbic acid are found after 1 or 2 months storage of fresh citrus fruit, which have very low surface areas and a protective peel, if they are stored in cool temperatures (3.3-5.6°C) (38). 

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