Beta Carotene Beta-carotene is a member of the carotenoid family and has over 500 relatives. Carotenoids are yellow-to-red pigments found in all green plant tissues and in some species of algae. So far 21 different carotenoids have been found in human blood. The most abundant ones are alpha-carotene, beta-carotene, lutein, lycopene, cryptoxanthin and zeaxanthin. A molecule of alpha-carotene, beta- carotene, or cryptoxanthin can be split into two molecules of vitamin A in the body but the conversion
The data from the chromatography portion of the experiment showed that the least polar of the pigments would travel the most and the most polar would travel the least; chlorophyll b was the most polar and carotene was the least polar. The spectrophotometric portion of our experiment support this as well by showing us what wavelengths the pigments reflected and absorbed. With any experiment, however, are there sources of error. One source of error with this
Phytochemicals are chemical compounds that occur naturally in plants that give the plant their characteristic colors, smells, or tastes. The word phytochemical literally means plant chemical, since the prefix “phyto” means "plant" in Greek. The color and smell of certain phytochemicals may be useful to the plant in attracting bees for pollination. Some phytochemicals protect plants from destructive insects and microbes. Colorful pigments in skin of fruits and vegetables protect the plant from
.. ...in A. Carrots are high in Vitamin A, B, K, and also contain potassium and other vitamins and minerals. Beta-Carotene also helps prevent skin disorders, night blindness and other eye problems; it enhances immunity, protects against toxins, and helps prevent colds, flu, and infections. It is an antioxidant and protector of the cells and slows the aging process. Beta-carotene can help reduce the risk of cancer. Carrots aren’t only eaten raw, they can be frozen and canned for a later consumption
To uncover organic compounds like carbohydrates, lipids, proteins and nucleic acid, by using tests like Benedict, Lugol, Biuret and Beta Carotene. Each test was used to determine the presents of different organic molecules in substances. The substances that were tested for in each unknown sample were sugars, starches, fats, and oils. Moreover, carbohydrates are divided into two categories, simple and complex sugars. Additionally, for nonreducing sugars, according to Stanley R. Benedict, the bond
In order to isolate -carotene from spinach, we started out with a completely dehydrated solution of spinach extract. All of the water in the solution needed to be removed because the high boiling point of water would have made it difficult to evaporate in the RotoVap. An anhydrous sodium sulfate salt was added to the liquid spinach extract, which absobed all of the water. The solution was filtered with gravity filtration removing all of the salt. The remaining spinach solution was then RotoVaped
the desired organic chemicals to pass through. The pigments tested in this experiment are carotenes, pheophytin a and b,
green chlorophyll is the main pigment that helps the plants absorb light energy and turn it into food. (http://news.nationalgeographic.com/news/2004/10/1005_041008_fallfoliage.html ) In the summer you see green, but accessory pigments xanthophylls, carotene,and in some trees, anthocyanins are still there. Accessory pigments transfer light energy to chlorophyll. In trees, you do not see the pigments until the fall because they stop making chlorophyll. Like a bear, trees also hibernate in the winter.
cylinder. Lastly, the cylinder was taken out from the jar. When analyzing the paper chromatography, golden yellow represented carotene, pale yellow represented xanthophyll, green grass represented chlorophyll a, and yellow- green represented chlorophyll b. Chlorophyll b was all the way at the bottom of the paper making it the most polar and the least soluble in the solvent. Carotene was the most nonpolar and the most soluble in the solvent.
During the Organic Molecules experiment, four reagents were used to test for the presence of three of the four basic categories of Organic Molecules, carbohydrates, lips, and proteins, in control substances and Cheerios. For carbohydrates, I was testing, specifically, for the presence of reducing (polysaccharides) and non-reducing sugars (monosaccharides). Carbohydrates, both reducing and non-reducing, are important to the cell because they act as an energy source and are an important factor in building
Rice can be genetically modified to produce beta carotene in the grain which is a type of pro-vitamin A. This process consists of ‘copying the genes which govern a particular characteristic from one organism and transferring them to another’ (GM Crops & the Envrionment: Benefits & Risks, 2000, p. 3).Originally, in 2000 the genes inserted was a plant phytoene synthase which came from a daffodil and the Erwinia uredovora carotene desaturase however, in 2005 through further testing at Syngenta’s
Especially, carrot’s carotene consists of beta-carotene, which is the most known as a colored bright orange; the colorful carrot has an effect on reduction of the risk cardiovascular disease. Similarly, beta-carotene is also an antioxidant and converts into vitamin A. Taking vitamin A of carrot is 113%/122grams will help in good vision and eye health. Nevertheless, if we supplement too much beta-carotene, our health can be higher dangerous in cancer disease and in heart disease (“Beta-carotene”). In addition
hypothesized that the most polar and least soluble substance, chlorophyll B will be at the bottom of the chromatography paper and that it would be followed by chlorophyll A, xanthophyll and then finally the least polar but most soluble substance beta carotene will be towards the top of the chromatography paper. Method & Results The scientists used a capillary tube to streak the leaf pigment extract on a pencil that was previously drawn a centimeter from the edge of the paper cylinder. The
eventually be offered nationwide if test market consumers place these snacks in ... ... middle of paper ... ...n. June 1996, Volume 63, No. 6, 891-895. Greenberg, E., Robert, M.D., et al. Mortality Associated with Low Plasma Concentration of Beta Carotene and the Effect of Oral Supplementation. Journal of American Medical Association. March 6, 1996, Volume 275, No. 9, 699-703. Seddon, Johanna M., M.D., et al. Dietary Carotenoids, Vitamins A, C, and E, and Advance Age-Related Macular Regeneration
Thin Layer Chromatography I. Abstract The purpose of this lab was to determine the rate of flow values (Rf=distance of component/distance of solvent) for certain pigments found in chlorophyll and carotene. For the chlorophyll, we observed the following five colors: yellow, orange, dark green, green, and light green. For the cartenoid, we observed the following five colors: yellow, auburn, purple, pink, and red. The solvent in both of our experiments traveled a distance of 6.8cm. We obtained
In this experiment we are using a process called “chromatography” in order to accurately identify and separate the photosynthetic pigments from one another. A small sample of spinach solution is placed onto chromatography paper and made contact with a solvent. The result of solvent as it moves through the paper due to capillary action are observed and recorded. The results show that both the sample and the solvent move along the chromatography paper at the same rate. As the sample moves through the
Free radicals play an important role in several biological processes such as cell signaling and redox regulation. However, prolonged exposure to free radicals leads to oxidative damage. Subsequently, it has been implicated in the progression of several diseases like cancer, cardiovascular disease, neurological disease, pulmonary disease, rheumatoid arthritis, nephropathy, ocular disease and pre-eclampsia. The antioxidant defense system within the body may confer protection to oxidative damage by
see that the samples both had the same three substances present. Brown was found in the leaf sample but not the grass sample and light green was only found in the leaf sample so some differences were found. Conclusions / Analysis The substances: carotene, phaeophytin a, phaeophytin b, chlorophyll a and chlorophyll b can be identified using a calculation to calculate the Rf of a substance. We calculate the Rf of every colour present on the chromatography paper. Then calculate:
pigments. However, the ratio of 4:6 didn’t show the bands for xanthophylls and carotene while 6:4 ratio did show the band for yellow and light yellow which are characteristic of xanthophyll and carotene. We also calculated the Rf factor by measuring how far the substance travelled (ds) and how far the solvent travelled (dx) (Rf=ds/dx). By calculating the Rf values in 6:4 ratio, we can conclude that Xanthophyll (Rf=.84), carotene (Rf=.8), Pheophytin (Rf=.62) were more polar than chlorophyll A (Rf=.89) and
Fruit smoothies for weight loss A lot of people are wondering how to lose weight fast and easy. It takes time and diet to lose weight. Time will consume in losing weight because of your preparation of food to eat on your diet. Some people do not have this time to do so. So are there any other easy and quick to do this? Yes there is. Who says those smoothies are just fatty drinks, fruit smoothies for weight loss, yes it is possible. It is quick and easy to make. It also gives proper nutrition that