{"type": "FeatureCollection", "features": [{"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"}}, {"id": "1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:22:21Z", "type": "Journal Article", "created": "2023-09-22", "title": "Using Science and Technology to Unveil The Hidden Delicacy Terfezia arenaria, a Desert Truffle", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Terfezia arenaria is a desert truffle native to the Mediterranean Basin region, highly appreciated for its nutritional and aromatic properties. Despite the increasing interest in this desert truffle, T. arenaria is not listed as an edible truffle authorized for trade in the European Union. Therefore, our objective was to showcase T. arenaria\u2019s nutritional and chemical composition and volatile profile. The nutritional analysis showed that T. arenaria is a good source of carbohydrates (67%), proteins (14%), and dietary fibre (10%), resulting in a Nutri-Score A. The truffle\u2019s volatile profile was dominated by eight-carbon volatile compounds, with 1-octen-3-ol being the most abundant (64%), and 29 compounds were reported for the first time for T. arenaria. T. arenaria\u2019s nutritional and chemical compositions were similar to those of four commercial mushroom and truffle species, while the aromatic profile was not. An electronic nose corroborated that T. arenaria\u2018s aromatic profile differs from that of the other four tested mushroom and truffle species. Our data showed that T. arenaria is a valuable food resource with a unique aroma and an analogous composition to meat, which makes it an ideal source for plant-based meat products. Our findings could help promote a sustainable future exploitation of T. arenaria and ensure the quality and authenticity of this delicacy.</p></article>", "keywords": ["electronic nose", "mushrooms and truffles", "plant-based meat", "nutritional composition", "CLAVERYI", "MUSHROOMS", "Chemical technology", "ELECTRONIC NOSE", "FOOD SECURITY", "Biology and Life Sciences", "IN-VITRO", "TP1-1185", "VOLATILE ORGANIC-COMPOUNDS", "NUTRITIONAL-VALUE", "CHEMICAL-COMPOSITION", "PLEUROTUS-OSTREATUS", "desert truffles", "Article", "volatile organic compounds", "GC-MS"]}, "links": [{"href": "https://repositorio.ulisboa.pt/bitstream/10451/59752/1/Ferreira%20et%20al%202023_Foods.pdf"}, {"href": "https://www.mdpi.com/2304-8158/12/19/3527/pdf"}, {"href": "https://doi.org/1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Foods", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8", "name": "item", "description": "1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-09-22T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=NUTRITIONAL+COMPOSITION&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=NUTRITIONAL+COMPOSITION&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=NUTRITIONAL+COMPOSITION&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=NUTRITIONAL+COMPOSITION&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-09-23T06:01:37.025615Z"}