Search results for "Brazil nut"

showing 3 items of 3 documents

Chemical characterization of a variety of cold-pressed gourmet oils available on the Brazilian market

2018

Different specialty extra virgin oils, produced by cold-pressing fruits/nuts (olive, pequi, palm, avocado, coconut, macadamia and Brazil nut) and seeds (grapeseed and canola), and retailed in the Brazilian region of Minas Gerais, were chemically characterized. Specifically, for each type of oil, the fatty acid composition was elucidated by GC-FID, the contents of selected polyphenols and squalene were determined respectively by UHPLC-MS and UHPLC-PDA, whereas minerals were explored by means of ICP-MS. Olive oil was confirmed to have the highest MUFA content due to a valuable level of oleic acid, while oils from grapeseed, Brazil nut and canola were marked by nutritionally important PUFA lev…

0301 basic medicineSettore CHIM/10 - Chimica Degli AlimentiFood HandlingPalm Oilsqualenecold-pressingFatty Acids MonounsaturatedSqualenechemistry.chemical_compoundNutsVitisFood scienceCanolaChromatography High Pressure LiquidFlame Ionization2. Zero hungerCoconut oilmineralsSeedsCoconut OilFruit/nut oils Seed oils Cold-pressing Chemical characterization Fatty acids Polyphenols Squalene Minerals.fruit/nut oilsBrazilseed oilsSpectrometry Mass Electrospray IonizationChromatography Gasfood.ingredientfatty acids03 medical and health sciencesfoodPlant OilsOlive OilFruit/nut oils Seed oils Cold-pressing Chemical characterization Fatty acids Polyphenols Squalene Mineralspolyphenols030109 nutrition & dieteticschemical characterizationPerseafruit/nut oils; seed oils; cold-pressing; chemical characterization; fatty acids; polyphenols; squalene; mineralsLauric acidfood.foodTyrosolOleic acidchemistryMacadamiaBertholletiaHydroxytyrosolRapeseed OilFood AnalysisFood ScienceBrazil nut
researchProduct

Fumigation of Brazil nuts with allyl isothiocyanate to inhibit the growth of Aspergillus parasiticus and aflatoxin production

2017

Abstract BACKGROUND Brazil produces approximately 40 000 tons of Brazil nuts annually, which is commonly contaminated with fungi and mycotoxins. Gaseous allyl isothiocyanate (AITC) was used to inhibit the growth of Aspergillus parasiticus and its production of aflatoxins (AFs) in Brazil nuts. RESULTS Nuts were inoculated with 104 spores g−1 of A. parasiticus and placed in airtight glass jars with controlled relative humidity (RH = 95 or 85%). Samples were treated with 0, 0.5, 1.0 or 2.5 µL L−1 of gaseous AITC and analyzed after 30 days to determine the fungal population and AFs content. Samples were also submitted to sensory evaluation. AITC at 2.5 µL L−1 could completely inhibit the fungal…

AflatoxinFumigationfood qualityBacterial growthchemistry.chemical_compound0404 agricultural biotechnologyfoodAflatoxinsIsothiocyanatesmycotoxinsFood PreservationFood scienceMycotoxinResearch Articlesnatural products with biocidal activityNutrition and Dieteticsbiologyfood and beverages04 agricultural and veterinary sciencesbiology.organism_classificationAllyl isothiocyanate040401 food sciencefood.foodAspergillus parasiticusSporefood safetyAspergilluschemistryBertholletiaFood Preservativesshelf lifeAgronomy and Crop ScienceResearch ArticleBrazil nutFood ScienceBiotechnologyJournal of the Science of Food and Agriculture
researchProduct

Determination of total mercury in nuts at ultratrace level

2014

Abstract Total mercury, at μg kg−1 level, was determined in different types of nuts (cashew nut, Brazil nuts, almond, pistachio, peanut, walnut) using a direct mercury analyser after previous sample defatting and by cold vapour atomic fluorescence spectrometry. There is not enough sensitivity in the second approach to determine Hg in previously digested samples due to the strong matrix effect. Mercury levels in 25 edible nut samples from Brazil and Spain were found in the range from 0.6 to 2.7 μg kg−1 by using the pyrolysis of sample after the extraction of the nut fat. The accuracy of the proposed method was confirmed by analysing certified reference materials of Coal Fly Ash-NIST SRM 1633…

Detection limitNutfood and beverageschemistry.chemical_elementMercuryRice flourBiochemistryDefattingfood.foodAnalytical ChemistryMercury (element)Spectrometry FluorescenceCertified reference materialsfoodchemistryLimit of DetectionCalibrationNutsEnvironmental ChemistryFood scienceSpectroscopyFood contaminantBrazil nutAnalytica Chimica Acta
researchProduct