Acorns (Quercus rotundifolia Lam.) and grass as natural sources of antioxidants and fatty acids in the “montanera” feeding of Iberian pig: Intra- and inter-annual variations

Tejerina, David; García-Torres, S.; Vaca, M. Cabeza de; Vázquez, Francisco M.; Cava, Ramón

doi:10.1016/j.foodchem.2010.07.058

Cited by 118 publications

(114 citation statements)

References 26 publications

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“…However, crude fat, oleic and palmitic acids contents showed relatively higher levels considering previous findings (Charef et al 2008;León-Camacho et al 2004;Rodríguez-Estévez et al 2009;Vázquez 1998). Furthermore, linoleic acid percent showed relatively lower levels with respect to previous findings on Quercus ilex (Charef et al 2008;León-Camacho et al 2004;Rodríguez-Estévez et al 2009;Tejerina et al 2010). The energy content of the acorns ranged from Table 1 Fig .…”

Section: Discussioncontrasting

confidence: 81%

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Population variability based on the morphometry and chemical composition of the acorn in Holm oak (Quercus ilex subsp. ballota [Desf.] Samp.)

et al. 2011

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We have studied in this work the natural variability in Holm oak (Quercus ilex subsp. ballota) by analyzing acorn morphometry and chemical composition in 13 populations from the Andalusia region (southern Spain). Acorn morphometry showed statistic significant differences between the populations with a higher acorn weight, length, and diameter in the northern provenances (TJA, GSE, CTH, CHU, APS, and PCO), while the Southern provenances (RMA, SAA, CCO, BCA, and SCA) showed lower value that even decreased with the altitude. Acorn chemical composition also showed statistic significant differences between populations. Morphometry and chemical composition data were subjected to clustering analysis, and two major clusters were detected. This analysis showed that northern populations (CTH, TJA, SCA, CHU, PCO, GSE, and APS) showed a tendency to present values highest in acorn weight (5.42 g vs. 3.21 g); acorn length (37.21 mm vs. 28.73 mm); acorn diameter (16.12 mm vs. 13.79 mm); ash (1.88% vs. 1.55%); protein (4.82% vs. 4.38%); fat (12.55% vs. 9.92%); and oleic acid (66.93 vs. 66.4%). On the contrary, Southern populations (SSA, VJA, CCO, BCA, RG, and RMA) showed a tendency to present values lowest in sugar (10.28% vs. 11.25%); energy (20,076.71 kJ/kg vs. 20,149.26 kJ/kg); palmitic (16.11% vs. 16.39%) and linoleic acids (13.07% vs. 13.11%). The populations studied here seemed to integrate acorn morphology and chemical composition related to environmental conditions of the original provenances. These data have provided biochemical markers that help establish phylogenic associations between populations and also reveal potentially account as an alternative source for dietary nutrition.

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Section: Discussioncontrasting

confidence: 81%

“…taxas (Charef et al 2008;Ö zcan 2007). Fatty acid profiles were affected by intra-annual and inter-annual time sampling (Tejerina et al 2010). Differences in fatty acid were observed in different Quercus spp.…”

Section: Discussionmentioning

confidence: 99%

Population variability based on the morphometry and chemical composition of the acorn in Holm oak (Quercus ilex subsp. ballota [Desf.] Samp.)

et al. 2011

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“…More than 500 species of Oaks are spread out all over the world, differing in chemical composition and polyphenols contents. In general terms, literature reports that condensed tannins represented about 1% -2% of DM [65,68,69], across different botanical species of oaks, while hydrolizable tannins are much more abundant and can range from 5% up to 10% on DM [65,68,70]. The use of acorns as food is known since ancient times and the worldwide deployment across cultures and centuries is well documented in traditional recipes, above all for flour and bread production, but also for oil extraction [67,[71][72][73][74][75][76].…”

Section: Discussionmentioning

confidence: 99%

Dose-Response Relationship between Dietary Polyphenols from Acorns and Parotid Gland Hypertrophy in Pigs

Cappai¹,

Wolf²,

Pinna³

et al. 2012

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Proline contents of parotid glands (PG) in pigs constantly increase after the inclusion of different amounts of ripe hulled acorns in the diet providing high polyphenols levels. The dose-response relationship was estimated on natural hydrolizable tannins (expressed as tannic acid equivalent TAE) amounts of 25.8 to 36.1 g TAE/kg DM in experimental diets. Macroscopic and histological morphometry of parotid glands greatly varied according to feed intake and dosages of TAE ingested. The PG response (hypertrophy grade) on acorns' tannins content in the diet was positively correlated (R 2 = 0.748): the response to the protein precipitating activity (PPA) of tannins consisted of a functional parotidomegaly (hypertrophy), 1.34 up to 3.55 folds than control PGs, following an oral dosage 0.596 up 1.72 TAE g·kg -1 body weight·d -1 respectively, after one week exposure.

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“…In Montanera, the pigs were fed ad-libitum with acorns and grass available in Dehesa. Acorns and grass composition was variable during Montanera season and in the different years of study (Tejerina et al, 2011). The mean composition is shown in Table 1.…”

Section: Animals and Meat Samplingmentioning

confidence: 99%

Water-holding capacity and instrumental texture properties of m. Longissimus dorsi and m. Serratus ventralis from Iberian pigs as affected by the production system

2012

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Acorns (Quercus rotundifolia Lam.) and grass as natural sources of antioxidants and fatty acids in the “montanera” feeding of Iberian pig: Intra- and inter-annual variations

Cited by 118 publications

References 26 publications

Population variability based on the morphometry and chemical composition of the acorn in Holm oak (Quercus ilex subsp. ballota [Desf.] Samp.)

Population variability based on the morphometry and chemical composition of the acorn in Holm oak (Quercus ilex subsp. ballota [Desf.] Samp.)

Dose-Response Relationship between Dietary Polyphenols from Acorns and Parotid Gland Hypertrophy in Pigs

Water-holding capacity and instrumental texture properties of m. Longissimus dorsi and m. Serratus ventralis from Iberian pigs as affected by the production system

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