Important nutrients in different varieties of potatoes include dietary fibre, up to 3. Contributing close to 7 grams of fiber per serving. More of the nutritional contents, especially vitamins a and c were retained in cooked sweet potato than in fried one. One of the key nutritional benefits of sweet potato is that theyre high in an antioxidant known as betacarotene, which converts to vitamin a. No studies exist on electric treatment of sweet potato. Antioxidant, antiinflammatory and gut nutrients in sweet. Avoid sweet potatoes with worm holes, cuts, or any other problems with the skin. On the other hand, purple sweet potatoes have more anthocyanins, the flavonoid. In fact, sweet potatoes only have distant relation with potato, also known as solanum tuberosum. Pdf effects of cooking and frying on antioxidants present in. For even more antioxidants, choose purple sweet potatoes.
Health benefits of sweet potatoes a food and nutrition. Sweet potato stem cuttings 60120 days 23 stem nodes deep 56 78 n p k sweet potato weevil, whitefly, various nematodes sweet potato virus disease table 2. Sweet potatoes beta carotene, vitamin c tea, black or green catechins tomatoes canned lycopene, vitamin c watermelon lycopene, vitamin c wheat germ, whole grains selenium. In order to evaluate the efficacy of crisprcas9 technology in the root crop, sweet potato ipomoea batatas, two starch biosynthetic pathway genes, ibgbssi encoding granulebound starch synthase i, and ibsbeii. Analysis on the nutrition composition and antioxidant. The linus pauling institutes recommendations are noted when different. Cyanidins and peonidins are concentrated in the starchy core of part of purplefleshed sweet potatoes, and these antioxidant nutrients may be even more concentrated in the flesh than in the skin. The sweet potato or sweetpotato ipomoea batatas is a dicotyledonous plant that belongs to the bindweed or morning glory family, convolvulaceae.
Carotenoids are present in the flesh of all potatoes. According to a study, purple sweet potato extract was found to have antiobesity and antiinflammatory action on fat cells. Thanks to their impressive health profile, sweet potatoes have been associated with a long list of health benefits. Choose a colorful fruit or vegetable you have never tried before. Water and energy content and nutrient density found in orange flesh sweet potato ofsp, ofsp leaves and irish potatoes ip usda, 2016. May, 2019 notably, the antioxidant activity of sweet potatoes increases with the color intensity of their flesh. The total phenolic contents of extracts from four sweet potato samples were shown in table 2. Liver including cod liver oil, dandelions, carrots, broccoli leaves, sweet potatoes, and butter including ghee. Antioxidant activity, chemical and nutritional properties of. The rank order of total phenolic content was jizi 01 54.
The content of compounds in potato that may act as antioxidants in the human diet is not widely appreciated. Sweet potatoes provide vitamin a in the form of betacarotene, which is an antioxidant and an orange pigment. Trace elements such as the divalent metal ions selenium and zinc also have antioxidant activity, as does uric acid, an endogenous product of purine metabolism. It is highest in colored varieties, such as purple, deep orange and red sweet potatoes. Nutritional and medicinal qualities of sweetpotato tops and leaves shahidul islam professor plant science sweetpotato ipomoea batatas l. In potatoes with total carotenoids ranging from 35 to 795. Most dry beans and tubers have their own unique storage proteins. If you compare baking to boiling, microscopically, boiling helps thin out the cell walls and gelatinize the starch, which may enhance the bioavailability of nutrients, while at the same time the glycemic index of boiled sweet potatoes. Antioxidant activities varied widely among the sweet potato clones. Carrots, spinach, sweet potatoes, pumpkin, squash define a precursor a substance that is converted into or leads to the formation of another substance. The following foods contain vitamin a in general quantities not just in the form of betacarotene.
Potatoes usa was one of the first commodity groups to develop and use an fdaapproved nutrition label and has long since promoted positive nutrition messages. Read a broad overview of sweet potatoes, including information on nutrition, selection, storage, and preparation. Vitamin a is a fatsoluble vitamin, so be sure to eat your sweet potato with a little bit of fat, like a pat of butter or a drizzle of olive oil, to maximize vitamin absorption. Sweet potato nutrition health benefits of sweet potatoes. Bioactive compounds contained in this vegetable play a role in health promotion by improving immune function, reducing oxidative stress and free radical damage, reducing cardiovascular disease risk, and. Sweet potato leaves are a physiologically functional food that offer protection from diseases linked to oxidation, such as cancer, allergies, aging, hiv and cardiovascular problems. Pdf effects of baking and boiling on the nutritional and. Pdf in this study, we selected four different color fleshed sweet potatoes, purple jizi. Boiling may actually best retain the antioxidant power of sweet potatoes, compared to roasting and steaming. Gao, ya, antioxidant activities and phenolic acids in different raw and boiled potatoes and sweet. Micronutrients for health isted below are all the vitamins and nutritionally essential minerals and their functions, some common dietary sources, and the intake recommendations set by the institute of medicine. The young leaves and shoots are sometimes eaten as greens. Sweet potatoes contain a wealth of orangehued carotenoid pigments.
The tuber, however, contains no saturated fats or cholesterol, and is a rich source of dietary fiber, antioxidants, vitamins, and minerals than potatoes. However, potatoes actually have less energy 94 kcal100 g than most other staple foods when compared on a gramweight basis while providing substantial amounts of critical nutrients table 1. To get a variety of nutrients, eat a variety of colors. Encourage your family to pick a new fruit or vegetable each time you shop. The antioxidant contents betacarotene, chlorogenic acid, and vitamin c as well as the antioxidant capacity orac, frap, and abts of 4 sweetpotato varieties were measured in this study. The sweet potato is commonly thought to be a type of potato solanum tuberosum but does not belong. Nutrition facts of sweet potatoes authority remedies. Sweet potatoes are more fragile than white potatoes. Sweet potatoes contain almost twice as much fiber as other types of potatoes. Besides acting as antioxidants, carotenoids and phenolic compounds also provide sweet potatoes with their distinctive flesh colours cream, deep yellow, orange.
He noted that untreated sweet potatoes already are high in antioxidants, with 7 times more polyphenols than other potatoes. They contain a good amount of fiber as well as vitamin a, vitamin c, manganese and several other vitamins and minerals. Besides, the antioxidant activities in the ipomoea batatas. Analysis of nutritional composition and antioxidant activity of sweet. Also referenced in potatoes usas nutritional handbook. In some englishspeaking countries, people call sweet potatoes with different names like kumara and yam. The truth about antioxidant supplements mens health. To identify novel characteristics of these different types of sweet potato, we analyzed nutrient composition and dietary fiber content, and quantified anthocyanins content of sweet potato samples. In fact, one cup 200 grams of baked orange sweet potato with skin provides more than seven times the amount of betacarotene that the average adult needs per day 2. Sweet potato leaves, indeed, are more nutritious than the tuber itself.
The purple colour intensity of the sweet potatoes tended to be associated with high antioxidant activity. The antioxidant properties in the different varieties of leaves were determined and compared using four different assays, namely folinciocalteau, vanillinhcl, reducing power and dpph radical scavenging assay. Nutrients, bioactive nonnutrients and antinutrients in potatoes. Lam is the sixth most important food crop in the world, and new uses for this crop have been identified. Sweet potato is one of the highcalorie starch foods provide 90 calories100 g vis a vis to 70 calories100 g in potato. The sweet potato is a relatively newer food to the western world. Feb 08, 2018 believe it or not, there are health benefits of sweet potatoes for weight loss, too. Dec 17, 2017 sweet potatoes are high in many important nutrients. Sweet potatoes university of the district of columbia. Nutrients functioning as antioxidants include vitamins, for example ascorbic acid vitamin c, tocopherol vitamin e, and vitamin a.
How to cook sweet potatoes without losing nutrients. Antioxidant activity, phenolic and flavonoid contents in. An antioxidant carotenoid that is transformed into vitamin a in the body. Deephued varieties, such as purple, deep orange, and red sweet potatoes, score the highest 1, 29, 30. Carrots, acorn squash and pumpkin are also rich in. They are also one of the top sources of betacarotene, a precursor to vitamin a, in the plant world. Nutritional and medicinal qualities of sweetpotato tops. Youll also get between 15 and 30% of several energysupporting b vitamins and minerals, including potassium more on this below. In countries throughout africa, in india and in the caribbean, sweet potatoes have been shown to be a highly effective way of providing school age children with sizable amounts of their daily vitamin a. Although sweet potato leaves are being eaten in some parts of the world, its root. Sweet potato roots are good source of carbohydrates, while sweet potato leaves along with stems contain additional nutritional components in much higher quantities than many other vegetables. All recommendations are for adults 19 years and older. Basically, sweet potato s nutrition includes water 75%, carbohydrate 20. Anthocyanin content, antioxidant activity and total phenols as well as color characteristics of pfsp were determined by uvvisible or fluorescence spectrophotometry and chromametry.
Both potatoes and sweet potatoes contain antioxidants, substances that help control oxidative damage in the body. Sweet potatoes are a rich source of fibre as well as containing an array of vitamins and minerals including iron, calcium, selenium, and theyre a good source of most of our b vitamins and vitamin c. Basically, sweet potatos nutrition includes water 75%, carbohydrate 20. Sweet potato leaves nutrition, benefits, recipes 2beingfit. Sweet potato, nutrition composition, antioxidant activity, anthocynin. Potato contains on average 20 mg per 100 g fw of vitamin c, which may account for up to % of the total antioxidant capacity. Sweet potatoes are incredibly rich in betacarotene, the antioxidant responsible for the vegetables bright orange color. Betacarotene is a precursor to vitamin a because your body converts it into the active form of vitamin a. While researchers have long been aware of sporaminsstorage proteins in sweet potatoonly recently has research shown some of their unique antioxidant properties. To get the most nutrition from your sweet potatoes, dont peel simply scrub well before cooking. A serving of sweet potato delivers a third of your need for manganese, a mineral that helps produce collagen and promote skin and bone health. The antioxidant value of sweet potato, baked in skin described in orac units is. White potatoes are considered a highcalorie food compared with other staple foods, such as rice and pasta.
Antioxidant activities and polyphenols of sweet potato. Potatoes should be considered vegetables that may have high. Look for firm sweet potatoes with smooth, bright, uniformly colored skins. Total phenolics content and total antioxidant capacity. Sweet potatoes are rich in vitamin a and provide fiber, potassium, and many other nutrients. Nutrients and antinutrients composition of raw, cooked and. Crisprcas9based mutagenesis of starch biosynthetic genes. Spinach, pumpkins, eggs, apricots, papayas, mangoes, peas, and milk. The nutritional composition of a sweet potato healthy. Analysis on the nutrition composition and antioxidant activity of. This study aimed to determine nutrient iron, calcium, vitamin a and ascorbic acid and antinutrient oxalates and polyphenols contents in raw, cooked and dried sweet potato leaves two varieties of sweet potatoes, which were identified as commonly grown for leaves consumption were analyzed at department of food technology, sokoine university.
Pdf analysis on the nutrition composition and antioxidant activity. For instance, orange sweet potatoes have the highest levels of betacarotene, a carotenoid with antioxidant activity. One medium cooked sweet potato contains approximately. Adding fat to the meal can increase its absorption. Purplefleshed sweet potatoes would be a healthy food choice for consumers, as well as a potential source of natural food colourants. Its large, starchy, sweet tasting, tuberous roots are a root vegetable. Sweet potatoes beta carotene, vitamin c tea, black or green catechins tomatoes canned lycopene, vitamin c watermelon lycopene, vitamin c wheat germ, whole grains selenium, vitamin e. Sweet potatoes are generally consumed coked and baked. Potatoes and sweet potatoes food and nutrition information. Purple sweet potatoes of variety hl 491 used in this study other major ingredients needed to prepare biscuits such as wheat flour, sugar, baking powder, and butter were obtained. Weight per weight, 100 g of fresh leaves carry more iron, vitaminc, folates, vitamink, and potassium but less sodium than its tuber. Citrus fruits, red and green pepper, tomatoes vitamin e.
This study was initiated to improve antioxidant activity of potatoes by using electric treatment. Antioxidant capacity and antioxidant content in roots of 4. Research open access preparation and improved quality. Not only is it a great swap for white potatoes, it also has fewer calories. Evaluation of eight orange fleshed sweetpotato ofsp varieties.
Soybeans have glycinins, potatoes have patatins, yams have dioscorins, and corn has zeins. In this study, we selected four sweet potato cultivars with different color flesh, purple, red, yellow and whitefleshed sweet potatoes. Potatoes usa formerly the united states potato board was established in 1971 by a group of potato growers to promote the many benefits of eating potatoes. Promoting micronutrientrich orangefleshed sweetpotato varieties is needed. Other antioxidants in sweet potatoes include vitamins c, e and k. Apr 14, 2016 in fact, sweet potatoes only have distant relation with potato, also known as solanum tuberosum. According to the usda, one plain small baked sweet potato with the skin eaten contains. Antioxidant activity, phenolic and flavonoid contents in the. Notably, the antioxidant activity of sweet potatoes increases with the color intensity of their flesh. The phytochemicals plant chemicals in potatoes and sweet potatoes may also keep us healthy by regulating the immune system, fighting viruses and other pathogens, controlling inflammation, and inhibiting tumour growth. The largest and most advanced analysis of the antioxidant content of common foods to date shows that diseasefighting antioxidants may be found in unexpected fruits and vegetables, such as beans.
Sweet potato leaves spl, the main byproduct of sweet potato production, are rich in polyphenols, proteins, vitamins, minerals, and some. Feb 14, 2014 antioxidant, antiinflammatory and gut nutrients in sweet potato. Eating a diet rich in antioxidants has been shown to decrease risk for chronic diseases, she. Crisprcas9mediated genome editing is a powerful technology that has been used for the genetic modification of a number of crop species. Nov 04, 2019 for instance, orange sweet potatoes have the highest levels of betacarotene, a carotenoid with antioxidant activity. Since it is a complex carbohydrate, it also promotes satiety. The contents mentioned in the literature range from 50 to 100. Effects of steaming and dehydration on anthocyanins. The sweet potato how yummy and healthy it is chicago. Deephued varieties, such as purple, deep orange, and red sweet potatoes, score the highest. Purplefleshed sweet potatoes pfsp ipomoea batatas are rich sources of acylated anthocyanins. Analysis on the nutrition composition and antioxidant activity of different types of sweet potato cultivars article pdf available in food and nutrition sciences 0601. Angelone says sweet potatoes may have a slight edge on potatoes due to the antioxidant beta carotene.
Sweet potato ipomoea batatas leaves provide a dietary source of vitamins, minerals, antioxidants, dietary fiber, and essential fatty acids. Thats sweet potatoes have genes ibmyb1 and ibmyb2 that are specialized for the production of anthocyanin pigments in the fleshy part of the tuber. Also, antioxidant activity and total phenolic content w ere tested. Vitamin c like citrus, sweet potatoes are a good source of vitamin c, which helps fight infections, heal wounds and absorb iron. A tropical plant, evidence points to it being domesticated some 5,000 years ago in central america by the incan and preincan civilizations. In this study, ten different solvents, including water, aqueous methanol, aqueous ethanol and aqueous acetone were used to investigate the effect of solvents on the recovery and antioxidant activities of polyphenols from sweet potato leaves. The sweetpotato varieties were cultivated under different water regimes and also subjected to thermal processing. Free radicals are produced when our bodies break down food, but also by. Nov 19, 2011 other antioxidant substances such as phenolics and carotenoids are also part of sweet potatoes nutritional composition dincer et al. Vitamin c like citrus, sweet potatoes are a good source of vitamin c, which helps. Researchers found that out of the 42 vegetables that were tested, russet potatoes ranked fifth highest in their total antioxidant levels, coming in. Traditional sweet potato products are having significant role in income generation in small.
Studies have suggested that the antioxidants in the peel of sweet potatoes in particular, and especially purple sweet potato, may help reduce this oxidation process, thereby reducing the risk of cancer. Sep 05, 2012 table of contents betacarotenevitamin alycopeneseleniumvitamin cvitamin econclusion antioxidants are substances that guard your cells against the effects of free radicals an oxygen molecule that has lost an electron and will, in an attempt to stabilize itself, try and steal an electron from a neighboring molecule. The absorption of vitamin c and some antioxidants increases in sweet potatoes after cooking. In this study, we selected four different color fleshed sweet potatoes, purple jizi 01, red xinong 431, yellow beijing 553 and white shangshu 19 fleshed cultivars as test materials, analyzed nutrient composition, dietary fiber content, anthocyanins quantification, and total phenolics content, and also measured their total antioxidant activity in four different types of sweet potato. Physicochemical and antioxidant capacity analysis of colored sweet. Aug 26, 2019 sweet potatoes are antioxidant powerhouses vitamins a and c also function as antioxidants that protect cells against aging and disease. The antioxidant activity of sweet potatoes increases with the color intensity of the flesh. Sweet potato nutrition is high in fiber, antioxidants, vitamin a, vitamin c, manganese and many other important micronutrients. One medium sweet potato has 103 calories, yet packs 438% dv dvdaily value, based on 2,000 caloriesday of vision protecting vitamin a, 37% dv of antioxidant vitamin c, and the powerful, health. Antioxidant activity, nutritional, and phenolic composition of sweet. Plan at least two dinners per week with beans as the main source of. Amazing health benefits of sweet potatoes and nutritional. Sweet potatoes, baked in skin, are especially rich in vitamin c, with 19.