Influence of Harvest Date and Crop Yield on the Fatty Acid Composition of Virgin Olive Oils from Cv. Picual

Beltrán, Gabriel; Río, Carmen del; Sánchez, Sebastián; Martínez, Leopoldo

doi:10.1021/jf049894n

Cited by 162 publications

(167 citation statements)

References 16 publications

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“…Oleic acid (C18:1) content of the olive oil samples was observed in the range of 70.97-75.16%. An increase in oleic acid during olive fruit maturation was reported in another study (Beltran, Del Rio, Sanchez, & Martinez, 2004). Such trend was also observed in Memecik oils, as the oleic acid content in the early harvest was found lower than the mid and late harvest oils.…”

Section: Chemical Parameterssupporting

confidence: 70%

Effects of malaxation temperature and harvest time on the chemical characteristics of olive oils

2016

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a b s t r a c tThe aim of the study was to determine the effects of harvest time and malaxation temperature on chemical composition of olive oils produced from economically important olive varieties with a full factorial experimental design. The oils of Ayvalik and Memecik olives were extracted in an industrial two-phase continuous system. The quality parameters, phenolic and fatty acid profiles were determined. Harvest time, olive variety and their interaction were the most significant factors. Malaxation temperature was significant for hydroxytyrosol, tyrosol, p-coumaric acid, pinoresinol and peroxide value. Early and midharvest oils had high hydroxytyrosol and tyrosol (maximum 20.7 mg/kg) and pigment concentrations (maximum chlorophyll and carotenoids as 4.6 mg/kg and 2.86 mg/kg, respectively). Late harvest oils were characterized with high peroxide values (9.2-25 meq O 2 /kg), stearic (2.4-3.1%) and linoleic acids (9.3-10.4%). Multivariate regression analysis showed that oxidative stability was affected positively by hydroxytyrosol, tyrosol and oleic acid and negatively by polyunsaturated fatty acids.

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Section: Chemical Parameterssupporting

confidence: 70%

Effects of malaxation temperature and harvest time on the chemical characteristics of olive oils

2016

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“…The sample coded as J also shows the highest value of MUFA/PUFA ratio of 16.97 and 18.33 determined in oils produced respectively during the 2005 and 2006 crop seasons; moreover, this oil in a previous study exhibited the highest level of total phenols and o-diphenols content (Rotondi et al, 2006). Considering the Regulation (UE) n. 702/2007 which requires oleic acid ranges between 55% and 83% for extra virgin olive oils, a level above 75% determined in all oil samples analysed in this study, confirms their high nutritional value, as diets rich in monounsaturated and low in saturated fatty acids are known to lower low-density lipoprotein (LDL) without altering the beneficial high-density lipoprotein levels (cholesterol) (Beltràn, Del Rio, Sànchez, & Martìnez, 2004).…”

Section: Chemical Analysissupporting

confidence: 65%

Olive oil traceability by means of chemical and sensory analyses: A comparison with SSR biomolecular profiles

Rotondi¹,

Beghè²,

Fabbri³

et al. 2011

Food Chemistry

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“…An earlier seeding date appeared to cause an increase in stearic acid (saturated) concentration. Temperature may be responsible for this difference in fatty acid composition; it has been shown in several species that temperature can alter the fatty acid synthesis and composition (Beltran et al 2004;Silver et al 1984). In a study with 19 camelina accessions at three locations in western Canada, Gugel and Falk (2006) reported greater ranges for fatty acid concentration among accessions than among locations.…”

Section: Discussion Seeding Date Seeding Rate Evaluationmentioning

confidence: 99%

The effect of seeding rate, seeding date and seeder type on the performance of Camelina sativa L. in the Maritime Provinces of Canada

Urbaniak¹,

Caldwell²,

Zheljazkov³

et al. 2008

Can. J. Plant Sci.

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L. 2008. The effect of seeding rate, seeding date and seeder type on the performance of Camelina sativa L. in the Maritime Provinces of Canada. Can. J. Plant Sci. 88: 501Á 508. The hypothesis of this study was that spring camelina (Camelina sativa L.) could be grown as a high-value crop under the moist, cool conditions of the Maritime Provinces in Canada and seeding date, seeding rate, and type of seeder will modify productivity and oil composition. The objectives were (1) to determine the optimum seeding date and seeding rate for camelina production in the Maritimes; and (2) to evaluate the effect of seeder type (seed drill and forage seeder) on camelina establishment and seed yield. A seeding date and rate experiment and a seeder type and seeding rate experiment were conducted in 2005 and 2006 in Nova Scotia and Prince Edwards Island. Seeding date did not affect camelina emergence, plant height, seed yield and oil content. The earlier seeding date increased the concentration of stearic acid in the oil compared with the later seeding date. Seed yield of camelina was not affected by seeding rate in the seeder type by rate trial but higher yields were observed up to 600 seeds m Á2 in the seeding date by rate trial. The weak yield response to seeding rate could be explained by the high yield compensation ability of camelina through branching. It was suggested that seeding rates in the range of 400 to 600 seeds m Á2 would likely be best for camelina grown in the Maritime region. The forage seeder provided a better crop stand compared with the seed drill, although both seeders provided satisfactory crop establishment. Camelina has the potential to be produced successfully in the Maritime Provinces due to its adaptability to seeder type, low seeding rate requirements, and a wide window for seeding date. J. Plant Sci. 88: 501Á508. L'hypothe`se a`la base de cette e´tude est que la came´line faux-lin (Camelina sativa L.) pourrait devenir une culture lucrative dans le climat frais et humide caracte´ristique aux provinces Maritimes du Canada. Les auteurs postulent aussi que la date d'ensemencement, la densite´des semis et le type de semoir modifieront le rendement de la culture et la composition de l'huile. Les objectifs e´taient les suivants : (1) de´terminer la date d'ensemencement et la densite´des semis optimales pour la culture de la came´line dans les Maritimes et (2) e´valuer l'incidence du semoir (a`grains ou a`cultures fourrage`res) sur l'e´tablissement de la culture et son rendement grainier. À cette fin, les auteurs ont entrepris une expe´rience sur la date d'ensemencement et la densite´des semis ainsi qu'une seconde sur le type de semoir et la densited es semis en 2005 et 2006, en Nouvelle-É cosse et a`l'Iˆle-du-Prince-É douard. La date d'ensemencement n'a aucune incidence sur la leve´e de la came´line, la hauteur du plant, le rendement grainier ni la teneur en huile. Des semis plus pre´coces augmentent la concentration d'acide ste´arique dans l'huile, comparativement aux semis plus tardifs. Le rendement grai...

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Influence of Harvest Date and Crop Yield on the Fatty Acid Composition of Virgin Olive Oils from Cv. Picual

Cited by 162 publications

References 16 publications

Effects of malaxation temperature and harvest time on the chemical characteristics of olive oils

Effects of malaxation temperature and harvest time on the chemical characteristics of olive oils

Olive oil traceability by means of chemical and sensory analyses: A comparison with SSR biomolecular profiles

The effect of seeding rate, seeding date and seeder type on the performance of Camelina sativa L. in the Maritime Provinces of Canada

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