Pink grapefruit

Tomato, watermelon, pink grapefruit, papaya, guava, rose hip Carrot, apricot, mango, red pepper, kale, spinach, broccoli Carrot, collard green, pumpkin, corn, yellow pepper, cloudberry Kale, spinach, broccoli, pea, Brussels sprout, collard green, lettuce, corn, egg yolk... 

Lycopene is a bright red pigment that colors several ripe fruits, vegetables, and flowers. Tomato and tomato products are the main dietary sources of this carotenoid, although it is also found in watermelons, guavas, pink grapefruits, and in small quantities in at least 40 plants. - The absorption of lycopene in the human gut is increased by heat treatment, probably because the breakdown of the plant cells makes the pigment more accessible. ... 

Other common fruits are also good sources of lycopene that represents 87 to 95% of the total carotenoid content in several seeded and seedless watermelon cultivars," ° 56 to 66% in different papaya cultivars, and 24 to 58% in pink grapefruits (Table 4.2.3). 

Orange (Citrus sinensis) was found to be more active than pink grapefruit (Citrus paradisi) in scavenging peroxyl radicals, whereas grapefruit juice was more active than orange juice, when the oxygen radical antioxidant capacity (ORAC) assay was used... 

Of the acyclic carotenes, lycopene and -carotene are the most common. Lycopene is the principal pigment of some red-fleshed fruits and fruit vegetables, such as tomato, watermelon, red-fleshed papaya and guava, and red or pink grapefruit (see Table 7.3). -Carotene is more ubiquitous, but it is usually present at low levels except in Brazilian passion fruit (Mercadante and others 1998) and in carambola (Gross and others... 

F Khachik, GR Beecher, WR Lusby. Separation, identification, and quantification of the major carotenoids in extracts of apricots, peaches, cantaloupe, and pink grapefruit by liquid chromatography. J Agric Food Chem 37 1465-1473,1989. 

This difference in provitamin A is due to (3-carotene. Ting and Deszyck (50) showed red and pink grapefruit juice to contain 1.0 to 1.4 mg of (3-carotene per 100 g of juice when the fruit was fully mature. When calculated on the value of 1.667 International units of vitamin A = 1 pg of (3-carotene, the Florida juice would have contained the equivalent of 1667 to 2334 units of vitamin A/100 g. Purcell (JH, 52) reported approximately one-half this value for red grapefruit juice from Texas fruit. 

Tomatoes, watermelons, pink grapefruits, papaya, rosehip, and berries contain lycopene. The role of tomatoes in medicine can be summarized as follows ... 

Lycopene Antioxidant, may protect against prostate cancer Pink grapefruit, tomatoes, watermelon... 

Although red-colored fruits and vegetables are the most common sources of dietary lycopene, not all red-colored plants contain lycopene. Common food sources of lycopene are the tomatoes, processed tomato products, watermelons, pink guava, pink grapefruits, papaya, and apricots. The lycopene content of these foods are shown in Table I. 

GRAPEFRUIT JUICE PARACETAMOL t half-life of paracetamol. White grapefruit juice t plasma concentrations in 1 hour, while pink grapefruit juice caused the t in 2 hours Attributed to t elimination half-life of paracetamol caused by grapefruit juice Be aware... 

Most of the bitter glucosides are in the albedo and segment membranes so that commercial production of grapefruit juice without removal of naringin is possible. Production of juice from natsudaidai oranges 180) and restoration of the pink color to pink grapefruit juice by addition of pulp 181) require debittering. 

Lycopene is a red pigment found in tomatoes, watermelon, papaya, guava, and pink grapefruit. An antioxidant like vitamin E, lycopene contains many conjugated double bonds—double bonds separated by only one single bond—that allow jt electron density to delocalize and give the molecule added stability. In Chapter 16 we learn about such conjugated unsaturated systems. 

The few test rounds 1 was able to obtain, 45 ACP and 380 auto, were fired Into large pink grapefruits.In each case the Velex detonated and the bullet mushroomed to approx, twice it s original diameter. We ll present an indepth look at Velex in a future issue after more extensive testing is completed. 

The characteristic deep-red color of ripe tomato fruit and related products is mainly due to lycopene. This color serves as an important indicator of their quality. Tomatoes and tomato foods are an important source of carotenoids for humans and are a major source of lycopene in the Western diet. Other important sources of dietary lycopene include watermelon, guava, rose hip, papaya and pink grapefruit (Gross, 1987,1991 Beerh and Siddappa, 1959 Mangels et al., 1993) (Table 4.3). 

Sadler, G., Davis, J. and Dezman, D. 1990. Rapid extraction of lycopene and P-carotene from reconstituted tomato paste and pink grapefruit homogenates. J. Food Sci. 55 1460-1461. Sakamoto, H., Mori, H., Ojima, F., Ishiguro, Y., Arimoto, S., Imae, Y., Nanba, T., Ogawa, M. and Fukuba, H. 1994. Elevation of serum carotenoids after continual ingestion of tomato juice. J. Jpn Soc. Nutr. Food Sci. 47 93-99. 

Lycopene, a highly active carotenoid, is found in tomatoes (especially tomato sauces and ketchup), watermelon, pink grapefruit, guava, and calendula flowers. Men who regularly consume lycopene have a lower incidence of prostate cancer. 

Investigation of Antioxidant Activity of Essential Oils from Lemon, Pink Grapefruit, Coriander, Clove and its Mixtures by Capillary Gas Chromatography... 

Keywords lemon, pink grapefruit, coriander and clove essential oils, antioxidant activity, aldehyde/carboxylic acid test, capillary gas chromatography... 

The goal of work is studying of antioxidant properties of lemon, pink grapefruit, coriander, clove essential oils and its mixtures and comparison of antioxidant activity with the change of essential oil composition during a process of autooxidation. 

Fresh samples of the essential oils from lemon (Citrus limori) ( R.C.TREATT , the United Kingdom), pink grapefruit (iCitrus paradisi) ( Frutarom , Israel), coriander Coriandrum sativum L.) and clove buds (Caryophyllus aromaticus L.) ( Plant Lipids Ltd. , India), and the mixtures of lemon and clove (1 1), lemon and coriander (1 1), lemon, coriander and clove (1 1 1) oils were investigated. 

Figure 1. Content of hexanal (%) in solution after storage in light during 110 days in presence of individual essential oils and its mixtures 1 - control, 2 - lemon, 3 - pink grapefruit, 4 - coriander, 5 clove, 6 - lemon + clove, 7 - lemon + coriander, 8 - lemon + coriander + clove...

Grapefruit oil is produced mainly in the United States (Florida) and its composition and its sensory properties vary with the cultivar (white/pink grapefruits). Minor producers are Israel and Argentina. Usually, grapefruit oil contains more than 90 % terpene hydrocarbons ((+)-limonene, 92-96%), octanal (0.2-0.8%), decanal (0.1-0.6 %) and 0.01-0.8 % nootkatone [371]. Worldwide production is around 1500 t/yr. 

If a compound has enough conjugated double bonds, it will absorb visible light (Amax > 400 nm) and the compound will be colored. j8-Carotene, a precursor of vitamin A, is an orange substance found in carrots, apricots, and sweet potatoes. Lycopene is red and is found in tomatoes, watermelon, and pink grapefruit. 

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