{"type": "FeatureCollection", "features": [{"id": "10.1002/fsn3.1675", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:14:27Z", "type": "Journal Article", "created": "2020-07-15", "title": "Valorization of the green waste parts from sweet potato ( Impoea batatas L.): Nutritional, phytochemical composition, and bioactivity evaluation", "description": "Abstract<p>In the present study, leaves from 13 sweet potato cultivars were collected as raw materials. The nutritional and functional composition, antioxidant activity, and sunscreen activity of different sweet potato leaf samples were determined, and the comprehensive nutritional quality was calculated by gray relational analysis. Results showed that the nutritional and functional components are significantly different between different cultivars. Tainong71 showed the highest comprehensive nutritional quality, followed by Fu22, Ningcai, Fu23, Ecai10, Zhecai726, Ecai1, Fu18, Pushu53, Guangcai5, Shulv1, Guangcai2, and Zhecai1. The antioxidant activity varied from 3.94 to 16.75\uffc2\uffa0g Trolox equivalent/100\uffc2\uffa0g dry weight. Pushu53 showed the highest sunscreen activity, with the sun protection factor 24.65. There was a positive correlation between antioxidant activity and sunscreen activity (r\uffc2\uffa0=\uffc2\uffa0.737, p\uffc2\uffa0=\uffc2\uffa0.004). In conclusion, sweet potato leaves possess high nutritional and functional properties, and have the huge potential to be used as green leafy vegetables and sunscreen agent.</p>", "keywords": ["2. Zero hunger", "0404 agricultural biotechnology", "chemical/nutritional characterization ; antioxidant activity ; correlation analysis ; sunscreen acitvity ; gray relational analysis ; sweet potato leaves", "04 agricultural and veterinary sciences", "0405 other agricultural sciences", "Original Research"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/fsn3.1675"}, {"href": "https://doi.org/10.1002/fsn3.1675"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Food%20Science%20%26amp%3B%20Nutrition", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/fsn3.1675", "name": "item", "description": "10.1002/fsn3.1675", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/fsn3.1675"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-07-14T00:00:00Z"}}, {"id": "10.1007/s11104-005-5691-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:15:01Z", "type": "Journal Article", "created": "2005-11-16", "title": "Uptake Of Selenium And Its Antioxidant Activity In Ryegrass When Applied As Selenate And Selenite Forms", "description": "Selenium (Se) is an essential micronutrient for animal and human nutrition, but whether it is essential to plants remains controversial. However, there are increasing experimental evidences that indicate a protective role of Se against the oxidative stress in higher plants through Se-dependent glutathione peroxidase (GSH-Px) activity. The effects of the Se chemical forms, selenite and selenate, the rate of their application on shoot Se concentration and their influence on the antioxidative system of ryegrass (Lolium perenne cv. Aries), through the measurement of GSH-Px activity and lipid peroxidation, were evaluated in an Andisol of Southern Chile. Moreover, a soil\u2013plant relationship for Se was determined and a simple method to extract available Se from acid soils is proposed. In a 55-day experiment ryegrass seeds were sown in pots and soil was treated with sodium selenite or sodium selenate (0\u201310 mg Se  kg\u22121). The results showed that the Se concentration in shoots increased with the application of both selenite and selenate. However, the highest shoot Se concentrations were obtained in selenate-treated plants. For both sources of Se, there was a significant positive correlation between the shoot Se concentration and the GSH-Px activity; and the Se-dependence of this enzymatic activity was related especially with the chemical form of applied Se rather than the Se concentration in plant tissues. Furthermore, the lipid peroxidation, as measured by Thiobarbituric Acid Reactive Substances (TBARS), decreased at low levels of shoot Se concentration, reaching the lowest level at approximately 20 mg Se  kg\u22121 in plants and then increased steadily above this level. In addition, the acid extraction method used to evaluate available Se in soil showed a positive good correlation between soil Se and shoot Se concentrations irrespective of chemical form of Se applied.", "keywords": ["0106 biological sciences", "Selenium", "ryegrass", "antioxidant activity", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences", "Selenium; antioxidant activity; ryegrass"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-5691-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-5691-9", "name": "item", "description": "10.1007/s11104-005-5691-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-5691-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-10-01T00:00:00Z"}}, {"id": "10.1080/10942912.2020.1716796", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:17:29Z", "type": "Journal Article", "created": "2020-01-23", "title": "Antioxidant activity, nutritional, and phenolic composition of sweet potato leaves as affected by harvesting period", "description": "In the present study, the nutritional and phenolic composition as well as the antioxidant activity of sweet potato leaves (SPL) harvested in 3 different periods were determined and compared. Furthermore, gray relational analysis was used to compare the comprehensive nutritional value. Results showed SPL HP1 had the highest protein value (30.8 \u00b1 0.4 g/100 g dw), while SPL HP3 had the highest content of vitamin C (104.6 \u00b1 4.9 mg/100 g dw), vitamin E (5.8 \u00b1 0.4 mg/100 g dw), total polyphenol content (9.1 \u00b1 0.3 g/100 g dw), antioxidant activity (DPPH: 7.4 \u00b1 0.1 g VcE/100 g dw; ABTS: 10.6 \u00b1 0.7 g VcE/100 g dw; FRAP: 0.617 \u00b1 0.005 \u00b5mol TroloxE/100 g dw), and comprehensive nutritional value (weighted gray relational grade 0.8336). The individual phenolic composition showed the presence of six caffeoylquinic acids, caffeic acid, and two flavonoids (quercetin and isoquercetin), which were significantly different among different harvest periods. In conclusion, HP3 was an optimal period for harvesting SPL.", "keywords": ["nutritional composition", "antioxidant activity", "Harvest period", "NUTRITIONAL COMPOSITION", "Food processing and manufacture", "HARVEST PERIOD", "Phenolic composition", "0404 agricultural biotechnology", "Antioxidant activity", "TX341-641", "https://purl.org/becyt/ford/2", "Sweet potato leaves", "2. Zero hunger", "harvest period", "Nutrition. Foods and food supply", "Qu\u00edmica", "04 agricultural and veterinary sciences", "TP368-456", "PHENOLIC COMPOSITION", "sweet potato leaves", "Nutritional composition", "SWEET POTATO LEAVES", "https://purl.org/becyt/ford/2.11", "0405 other agricultural sciences", "ANTIOXIDANT ACTIVITY", "phenolic composition"]}, "links": [{"href": "https://www.tandfonline.com/doi/pdf/10.1080/10942912.2020.1716796"}, {"href": "https://doi.org/10.1080/10942912.2020.1716796"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/International%20Journal%20of%20Food%20Properties", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/10942912.2020.1716796", "name": "item", "description": "10.1080/10942912.2020.1716796", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/10942912.2020.1716796"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=antioxidant+activity&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=antioxidant+activity&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=antioxidant+activity&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=antioxidant+activity&offset=3", "hreflang": "en-US"}], "numberMatched": 3, "numberReturned": 3, "distributedFeatures": [], "timeStamp": "2026-09-23T06:02:19.318715Z"}