An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... There is an increasing demand for bioactive-loaded bio-based packaging materials to obtain food products with extended shelf-life and improved quality. The aims of the present study were to fabricate a Citrus paradise essential oil (CPEO)-loaded Lallemantia iberica seed mucilage (LISM) based edible coating and to evaluate the effects of the CPEO-LISM edible coating on the preservation of lamb slic ...
Citrus paradisi; active food packaging; anaerobes; antibacterial properties; bacteria; beef; biopreservatives; cold storage; color; food pathogens; foodborne illness; grapefruits; lipid peroxidation; nisin; pH; protein degradation; seed extracts; shelf life
Abstract:
... This study aimed to develop an active packaging (AP) system for beef storage using vacuum skin packaging (VSP) applied with mixed natural preservatives (MNPs) consisting of grapefruit seed extract (GSE), cinnamaldehyde (CA), and nisin; and to assess its effect on the physicochemical, microbial, and antibacterial properties against food-borne pathogens in beef compared with using wrapped packaging ...
... This study focused on yuba films coated with active agents to improve microbiological and oxidative stability and the feasibility of preserving beef patties. Yuba films (YC) coated with oregano essential oil (YO), grapefruit seed extract (YG), and their mixture (YOG) were characterized and applied to beef patties. YO (2.56 ×10−10 g m/Pa·sec·m2) displayed exceptional water barrier properties compar ...
... The aim of this study was to remove bitterness from cold pressed grapefruit seed oil. Seven different metal‐organic frameworks and three natural clays (commercial bleaching earth, zeolite, and sepiolite) were used as adsorbents. In addition, water washing and solvent extraction treatments were done. After the treatments, oil physicochemical properties, fatty acid, sterol, tocopherol and flavonoid ...
Freddy González; Eva García‐Martínez; María del Mar Camacho; Nuria Martínez‐Navarrete; Bruno Sarmento; Iva Fernandes; Victor Freitas; Francisca Rodrigues; Beatriz Oliveira
... BACKGROUND: The development of functional and nutraceutical foods comes from a greater awareness of the relationship between food and health by consumers. In recent years, the idea of purifying and encapsulating bioactive compounds through techniques such as spray drying has been well received by the food industry. The development and characterization of a grapefruit (Citrus paradisi) nutraceutica ...
... Grapefruit fruit (Citrus paradisi Macfad) are sensitive to postharvest temperature variations. In red grapefruit cultivars, peel color is a characteristic and important quality parameter that may undergo changes during storage due to alterations in the content of pigments. So far, it is not clear if the postharvest peel color variations in grapefruit are regulated at the transcriptional level due ...
... The physical and chemical properties of pectin extracts obtained from different white and pink/red varieties of grapefruit [Citrus paradisi (Macf.)], using both conventional heating (CHE) and thermosonication (TS), were investigated. The content of galacturonic acid (GalA), degree of esterification (%DM), color and antioxidant capacity were analyzed. Fourier‐Transform Infrared Spectroscopy (FTIR) ...
Anastrepha ludens; Citrus paradisi; ascorbic acid; color; essential oils; firmness; fruit quality; fruits; grapefruits; heat; hot water treatment; juices; limonene; microwave treatment; myrcene; odors; pH; storage temperature; titratable acidity; total soluble solids
Abstract:
... BACKGROUND: Hot water treatment (HWT) against Anastrepha ludens was developed achieving 48 °C in the core of grapefruits and holding it for 6 min. After heating, the grapefruits were hydro‐cooled and stored at 23 °C and analyzed for 16 days. The effect of microwave‐assisted HWT (MW‐HWT) on grapefruit quality was analyzed and compared with the quality of fruits treated with HWT and control fruits ( ...
... The aim of this study was to evaluate physicochemical and functional properties of the defatted cold press meals of lemon, orange and grapefruit seeds. Proximate composition, viscosity, colour, flavonoid and phenolic acid compositions, and functional properties (water and oil holding capacity, emulsion and foaming properties and least gelling concentration) were determined. It was shown that the m ...
... Degreening early season grapefruits using ethylene helps to accelerate peel color change resulting in uniformly colored, attractive and marketable fruits. In current study, phytochemicals and flavonoid-pathway genes were studied in early season grapefruits degreened using 5ppm and 10ppm ethylene and stored for 35days under market-simulated conditions. Ethylene treatment and concentration had signi ...
... The aim of this study was to characterise the proteins of lemon (Citrus limon var. Kütdiken), orange (Citrus sinensis var. Dörtyol) and grapefruit (Citrus paradisivar. Beyaz) seeds extracted from their defatted press cakes. The press cakes were collected from the cold oil pressing of the seeds which were pre-treated by different techniques. Ultrasound-assisted alkaline (pH=9.0) extraction and isoe ...
Citrus paradisi; Rosmarinus officinalis; anti-aging properties; color; cross-over studies; cytokines; females; fruit extracts; grapefruits; humans; image analysis; lipid peroxides; malondialdehyde; models; nutrition; photoaging; polyphenols; radiation resistance; rosemary; signal transduction; signs and symptoms (animals and humans); ultraviolet radiation
Abstract:
... Plant polyphenols have been found to be effective in preventing ultraviolet radiation (UVR)-induced skin alterations. A dietary approach based of these compounds could be a safe and effective method to provide a continuous adjunctive photoprotection measure. In a previous study, a combination of rosemary (Rosmarinus officinalis) and grapefruit (Citrus paradisi) extracts has exhibited potential pho ...
... The effect of the UV-C light (doses: 0.0–3.94 J/cm2) on the main bioactive compounds of grapefruit juice and their stability were evaluated throughout 30 and 16 days of storage at 4 and 10 °C respectively. Organic acids (citric, malic, ascorbic and tartaric) and flavonoids (naringin, hesperidin and neohesperidin) were quantified by HPLC, whereas total phenols and the antioxidant capacity were dete ...
Citrus paradisi; Citrus reshni; cell division; cell growth; color; crops; deficit irrigation; developmental stages; evapotranspiration; fruit composition; fruit growing; fruit quality; fruit yield; fruits; grapefruits; growers; juices; mandarins; orchards; rain; raw fruit; ripening; semiarid zones; titratable acidity; total soluble solids; trees; water potential; water resources; water stress; Spain
Abstract:
... Grapefruit (Citrus paradisi Macf.) has increased in importance as a crop species in the south-east of Spain in recent years. In spite of the fact that grapefruit is well adapted to semi-arid conditions, the irrigation necessities for fresh fruit production continue to be very high. The scarcity of water resources forces citrus growers to optimise their water use by using deficit irrigation (DI) st ...
Citrus paradisi; color; cultivars; degreening; ethylene; grapefruits; growing season; plantations; production costs; ripening; temperature
Abstract:
... This contribution analyses the influence of net radiation and temperature on the colour changes that take place in the peel of two cultivars of grapefruit (Citrus paradisi Macf.), Rio Red and Star Ruby. The study, which covered four growing seasons (2005/6, 2006/7, 2010/11 and 2011/12) shows that, while net radiation influenced the colour change in both varieties, it was not sufficient in itself t ...
Citrus paradisi; ascorbic acid; carotenoids; citric acid; color; flavonoids; grapefruit juice; grapefruits; health promotion; high pressure treatment; microbial growth; nonthermal processing; shelf life; storage time
Abstract:
... Grapefruit juice treated with high pressure processing (HPP), thermal processing (TP) and control (no treatment) was analyzed for the levels of various bioactive compounds and color, during 21days of storage at 4°C. The TP treatment juice had significantly (P≤0.05) higher L* and b* values than HPP and control juice throughout the storage period. A gradual decline in the level of ascorbic acid was ...
... The grapefruit varieties Marsh (white-fleshed) and Redblush (pink-fleshed) are the most widely cultivated varieties in the world. In this work we attempt to determine the temperature below which degreening begins in these two varieties of grapefruit, first studying the influence of radiation on the colorimetric coordinates and then the influence of minimum temperatures on the change from green to ...
... Accumulation of lycopene in citrus fruits is an unusual feature restricted to selected mutants. Grapefruit (Citrus paradisi Macf.) is the Citrus specie with greater number of red-fleshed mutants, but the molecular bases of this alteration are not fully understood. To gain knowledge into the mechanisms implicated in this alteration, we conducted a comparative analysis of carotenoid profile and of t ...
... The most common thrips species found in Cyprus citrus orchards between 2003 and 2008 were Pezothrips kellyanus (Bagnall) (Thysanoptera: Thripidae), Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), and Thrips tabaci (Lindeman) (Thysanoptera: Thripidae). Only Pezothrips kellyanus, Kelly's citrus thrips (KCT) causes feeding damage on citrus fruits in Cyprus. KCT adults prefer to conce ...
... Citrus industry is a major part of Florida's agricultural and natural resource economy. Proper and timely identification and control of citrus disease could assure fruit quality and safety, improve production, and minimize economic losses. This study was aimed to develop a machine vision based method for detecting common citrus peel diseases using color texture feature analysis of microscopic imag ...
... Grapefruit growers in the tropics require information about existing and new citrus cultivars with high productivity potential. The objective of this study was to determine the growth, yield, and fruit quality performance of seven pigmented and four white grapefruit cultivars under the dry tropic conditions of Colima, Mexico. The trees were budded on sour orange (Citrus aurantium L.) rootstock and ...
... Plant extract DF100, produced by Chemie Research and Manufacturing Co. (Casselberry, Florida-U.S.A.) from wastes of grapefruit (Citrus paradisi sp.) juice elaboration, presents anti-microbial and anti-oxydant properties. First experiments to use it to substitute sulfur dioxide in wine-making have been realized during two years. When DF100 is added in must at low level (less than 1 g/l), it does no ...