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pine nut

Bertrand Matthäus, Peiwu Li, Fei Ma, Haiyan Zhou, Jun Jiang, Mehmet Musa Özcan
Pinus armandii is suspicious to be responsible for the Pine Nut Syndrome, a long lasting bitter and metallic taste after the consumption of pine nuts. To find chemical characteristic features for the differentiation of P. armandii from other Pinus species 41 seed samples of the genus Pinus from 22 plant species were investigated regarding the content and the composition of fatty acids, tocopherols and amino acids. The predominant fatty acids in the seed oils were linoleic acid (35.2 - 58.2 g/100 g), oleic acid (14...
October 4, 2017: Chemistry & Biodiversity
Baiying Cao, Li Fang, Chunlei Liu, Weihong Min, Jingsheng Liu
High hydrostatic pressure treatments could increase the protein solubility (200 MPa), water holding capacity (400 MPa), and oil holding capacity (400 MPa) of pine nuts protein fractions, respectively. The exposed sufhydryl content for albumin was highest at 100 MPa while for other fractions it was 400 MPa, contrary for total sufhydryl content-generally it was at 100 MPa, except glutelin (400 MPa). Pine nuts protein fractions demonstrated the typical behavior of weak gels (G' > G″). After the treatments of high hydrostatic pressure the specific surface area of pine nuts protein particle was increased upon pressure, and the surface of protein became rough which increased the particle size...
January 1, 2017: Food Science and Technology International, Ciencia y Tecnología de Los Alimentos Internacional
Rong Liang, Zuoming Zhang, Songyi Lin
Effects of pulse electric field (PEF) on antioxidant activity of pine nut (Pinus koraiensis) peptide were discussed using H2O2-induced HepG2 cells and changes of peptide structures were measured by MIR, NMR and CD spectra. Using HPLC-MS/MS, a novel peptide was identified as QDHCH. After PEF treatment the DPPH and ABTS radical inhibition, and CAA values of QDHCH were increased to 85.13%±0.17%, 95.45%±0.12%, and 4670.10μmol of quercetin equivalents/100g. The PEF-treated QDHCH has better protective oxidative stress inhibitory of 74...
December 15, 2017: Food Chemistry
Kyunguk Jeong, Jihyun Kim, Kangmo Ahn, So Yeon Lee, Taek Ki Min, Bok Yang Pyun, Yoon Hee Kim, Kyung Won Kim, Myung Hyun Sohn, Kyu Earn Kim, Gwang Cheon Jang, Tae Won Song, Jung Hee Kim, You Hoon Jeon, Yong Ju Lee, Yong Mean Park, Hye Yung Yum, Hyun Hee Kim, Woo Kyung Kim, Sooyoung Lee
PURPOSE: Age-based causes and clinical characteristics of immediate-type food allergy (FA) have not been sufficiently studied. Therefore, we investigated age-dependent clinical profiles of FA in Korean children through an extensive multicenter investigation. METHODS: Using a case report form developed by the authors, a retrospective medical record review was performed of patients (0-18 years old) diagnosed with immediate-type FA between September 2014 and August 2015 in 14 tertiary hospitals in Korea...
September 2017: Allergy, Asthma & Immunology Research
Sofia Santillana Farakos, Régis Pouillot, Susanne E Keller
The impact of temperature, water activity (aw), and nut composition on Salmonella survival on tree nuts has not been thoroughly examined. The aim of this study was to determine the effect of temperature, aw, and nut composition on the survival of Salmonella on tree nuts and develop predictive models. Pecans, hazelnuts, and pine nuts were chosen based on differences in their typical fat content. Nuts were inoculated with a cocktail of five Salmonella serotypes (11 log CFU/mL) and then were dried and stored at 4, 10, and 25°C at 0...
April 17, 2017: Journal of Food Protection
Laura S Weyrich, Sebastian Duchene, Julien Soubrier, Luis Arriola, Bastien Llamas, James Breen, Alan G Morris, Kurt W Alt, David Caramelli, Veit Dresely, Milly Farrell, Andrew G Farrer, Michael Francken, Neville Gully, Wolfgang Haak, Karen Hardy, Katerina Harvati, Petra Held, Edward C Holmes, John Kaidonis, Carles Lalueza-Fox, Marco de la Rasilla, Antonio Rosas, Patrick Semal, Arkadiusz Soltysiak, Grant Townsend, Donatella Usai, Joachim Wahl, Daniel H Huson, Keith Dobney, Alan Cooper
Recent genomic data have revealed multiple interactions between Neanderthals and modern humans, but there is currently little genetic evidence regarding Neanderthal behaviour, diet, or disease. Here we describe the shotgun-sequencing of ancient DNA from five specimens of Neanderthal calcified dental plaque (calculus) and the characterization of regional differences in Neanderthal ecology. At Spy cave, Belgium, Neanderthal diet was heavily meat based and included woolly rhinoceros and wild sheep (mouflon), characteristic of a steppe environment...
April 20, 2017: Nature
Guodong Zhang, Lijun Hu, David Melka, Hua Wang, Anna Laasri, Eric W Brown, Errol Strain, Marc Allard, Vincent K Bunning, Steven M Musser, Rhoma Johnson, Sofia Santillana Farakos, Virginia N Scott, Régis Pouillot, Jane M Van Doren, Thomas S Hammack
Nuts have been identified as a vector for salmonellosis. The objective of this project was to estimate the prevalence and contamination level of Salmonella in raw tree nuts (cashews, pecans, hazelnuts, macadamia nuts, pine nuts, and walnuts) at retail markets in the United States. A total of 3,656 samples of six types of tree nuts were collected from different types of retail stores and markets nationwide between October 2014 and October 2015. These samples were analyzed using a modified version of the Salmonella culture method from the U...
March 2017: Journal of Food Protection
Jie Xing, Sitian Zhang, Mingdi Zhang, Songyi Lin
BACKGROUND: A variety of analytical techniques were applied to explore the effects of pulsed electric field (PEF) on α-helix structural changes in the novel antioxidant peptide Lys-Cys-His-Lys-Pro (KCHKP, 611.76 Da). RESULTS: The relative α-helix content of the KCHKP peptide was significantly altered from 100% to 89.91 ± 0.97% when the electric pulse frequency was 1800 Hz and the field intensity was 10 kV cm(-1) . Moreover, the 1,1-diphenyl-2-pycryl-hydrazyl (DPPH) and 2,2-azinobis diammonium salt (ABTS) radical-scavenging activities of PEF-treated KCHKP were increased from 56...
February 15, 2017: Journal of the Science of Food and Agriculture
Min-Yu Chung, Hyunjoon Woo, Juyeon Kim, Daecheol Kong, Hee-Don Choi, In-Wook Choi, In-Hwan Kim, Sang K Noh, Byung Hee Kim
The positional distribution pattern of fatty acids (FAs) in the triacylglycerols (TAGs) affects intestinal absorption of these FAs. The aim of this study was to compare lymphatic absorption of pinolenic acid (PLA) present in structured pinolenic TAG (SPT) where PLA was evenly distributed on the glycerol backbone, with absorption of pine nut oil (PNO) where PLA was predominantly positioned at the sn-3 position. SPT was prepared via the nonspecific lipase-catalyzed esterification of glycerol with free FA obtained from PNO...
March 1, 2017: Journal of Agricultural and Food Chemistry
K Jeong, S-Y Lee, K Ahn, J Kim, H-R Lee, D I Suh, B-Y Pyun, T K Min, J-W Kwon, K-E Kim, K W Kim, M H Sohn, Y H Kim, T W Song, J H Kwon, Y H Jeon, H Y Kim, J H Kim, Y M Ahn, S Lee
Peanut (PN) and tree nuts (TNs) are common causes of anaphylaxis in Western countries, but no information is available in Korea. To feature clinical characteristics of anaphylaxis caused by PN, TNs, and seeds, a retrospective medical record review was performed in 14 university hospitals in Korea (2009-2013). One hundred and twenty-six cases were identified, with the mean age of 4.9 years. PN, walnut (WN), and pine nut accounted for 32.5%, 41.3%, and 7.1%, respectively. The median values of specific IgE (sIgE) to PN, WN, and pine nut were 10...
March 2017: Allergy
Ruiwen Yang, Xingfang Li, Songyi Lin, Zuoming Zhang, Feng Chen
In the present study, two novel peptides Lys-Trp-Phe-Cys-Thr (KWFCT) and Gln-Trp-Phe-Cys-Thr (QWFCT) were purified and identified from 3 to 10kDa pine nut (Pinus koraiensis) meal protein. Their cytotoxicity and antioxidant activities in vitro were determined. Additionally, pulsed electric field technology, antioxidant activities, and circular dichroism were used together to investigate the relationship between antioxidant activities and secondary structure. The results showed that neither peptide demonstrated cytotoxicity in HepG2 cells...
March 15, 2017: Food Chemistry
Shuang Zhu, Soyoung Park, Yeseo Lim, Sunhye Shin, Sung Nim Han
BACKGROUND/OBJECTIVES: Consumption of pine nut oil (PNO) was shown to reduce weight gain and attenuate hepatic steatosis in mice fed a high-fat diet (HFD). The aim of this study was to examine the effects of PNO on both intestinal and hepatic lipid metabolism in mice fed control or HFD. MATERIALS/METHODS: Five-week-old C57BL/6 mice were fed control diets containing 10% energy fat from either Soybean Oil (SBO) or PNO, or HFD containing 15% energy fat from lard and 30% energy fat from SBO or PNO for 12 weeks...
October 2016: Nutrition Research and Practice
Eleonora Laura De Paola, Giuseppe Montevecchi, Francesca Masino, Davide Garbini, Martino Barbanera, Andrea Antonelli
Acrylamide is a carcinogenic and neurotoxic process contaminant that is generated from food components during heat treatment, while it is absent in raw foodstuffs. Its level in food arouses great concern. A method for acrylamide extraction and determination in dried fruits (dried prunes and raisins) and edible seeds (almonds, hazelnuts, peanuts, pine nuts, pistachios, and walnuts) using a QuEChERS-LC-ESI-MS-Triple Quadrupole approach was set up. Linearity, sensitivity, accuracy, and precision of the method were satisfactory...
February 15, 2017: Food Chemistry
Sandra Kotzor, Benjamin J Molineaux, Elanor Banks, Aditi Lahiri
In languages with an underlying consonantal length contrast, the most salient acoustic cue differentiating singletons and geminates is duration of closure. When concatenation of identical phonemes through affixation or compounding produces "fake" geminates, these may or may not be realized phonetically as true geminates. English and German no longer have a productive length contrast in consonants, but do allow sequences of identical consonants in certain morphological contexts, e.g., suffixation (green-ness; zahl-los "countless") or compounding (pine nut; Schul-leiter "headmaster")...
July 2016: Journal of the Acoustical Society of America
Min Jeong Kim, U Suk Jung, Seung Woo Jeon, Jae Sung Lee, Won Seob Kim, Sang Bum Lee, Youn Chil Kim, Bae Young Kim, Tao Wang, Hong Gu Lee
This study was conducted to examine the effects of adding phytoncide oil extracted from Korean pine nut cone byproduct to the diet of dairy cows on milk yield and compositions, fatty acid characteristics, complete blood count and stress response. A total of 74 Holstein cows were used for 30 days and divided into two groups. Each group was given a basal diet (C) or an experimental diet containing phytoncide additives at 0.016% (T) in feed. The results showed that phytoncide feeding had no effect on milk yield...
December 2016: Asian-Australasian Journal of Animal Sciences
Dengyu Chen, Xiaojuan Chen, Jun Sun, Zhongcheng Zheng, Kexin Fu
A lab-scale pyrolysis reactor was utilized to investigate the effect of pyrolysis temperature (300-700°C) on the yield, quality, and energy distribution of products issued from the pyrolysis polygeneration of pine nut shells. Afterward, activated carbon was prepared from biochar using the steam activation method. Pyrolysis temperatures ranging from 500 to 600°C were found to be optimal in inducing products with improved properties, such as higher heating values of non-condensable gas, lower water content and elevated heating values of bio-oil, and substantial fixed carbon content and greater specific surface area of biochar...
September 2016: Bioresource Technology
Beatriz Cabanillas, Jesus F Crespo, Soheila J Maleki, Julia Rodriguez, Natalija Novak
This study aimed to report the complete sequence of a 2S albumin purified from pine nut and to analyze its allergenic properties. Individual recognition of this protein by serum IgE from pine nut-allergic patients was assessed. IgE cross-linking capacity was analyzed in a basophil activation test. Inhibition of IgE-binding and stability to heating was also assessed. The complete nucleotide sequence was obtained and a phylogenetic study was carried out. 2S albumin from pine nut (registered as Pin p 1.0101) was recognized by IgE of 75% of sera...
November 1, 2016: Food Chemistry
Zhanglin Ni, Fubin Tang, Qing Yu, Yihua Liu
In this study, a total of 35 tree nut samples of walnut, pecan, pine seed, hickory nut and torreya were obtained from 5 farm product markets in Hangzhou, China, and investigated for essential (Cr, Mn, Fe, Mo, Cu, Zn, Se and Sr) and toxic (Al, As, Cd and Pb) elements by inductively coupled plasma-mass spectroscopy. Mean elemental concentrations of different tree nuts were in the following ranges: Cr 0.26-0.78 mg kg(-1), Mn 42.1-174 mg kg(-1), Fe 33.7-43.9 mg kg(-1), Mo 0.11-0.48 mg kg(-1), Cu 10.3-17...
December 2016: Food Additives & Contaminants. Part B, Surveillance
Ah Ron Lee, Sung Nim Han
Pine nut oil (PNO) was reported to reduce lipid accumulation in the liver. However, the specific effect of pinolenic acid (18:3, all-cis-Δ5,9,12), a unique component of PNO, on lipid metabolism has not been studied. We hypothesized that pinolenic acid downregulates the lipid anabolic pathway in HepG2 cells. HepG2 cells were incubated in serum-free medium supplemented with 50 μM bovine serum albumin (BSA), palmitic acid, oleic acid, γ-linolenic acid, pinolenic acid, eicosapentaenoic acid (EPA), or α-linolenic acid for 24 h...
July 2016: Lipids
Jorge Moreda-Piñeiro, Paloma Herbello-Hermelo, Raquel Domínguez-González, Pilar Bermejo-Barrera, Antonio Moreda-Piñeiro
Bioavailability of essential and toxic metals in edible nuts and seeds has been assessed by using an in vitro dialyzability approach. The samples studied included walnuts, Brazil nuts, Macadamia nuts, pecans, hazelnuts, chestnuts, cashews, peanuts, pistachios and seeds (almond, pine, pumpkin and sunflower). Metals were measured by inductively coupled plasma-mass spectrometry in dialyzates and also in samples after a microwave assisted acid digestion pre-treatment. Low dialyzability percentages were found for Al, Fe and Hg; moderate percentages were found for Ba, Ca, Cd, Co, Cu, K, Li, Mg, Mn, Mo, P, Pb, Se, Sr, Tl and Zn; and high dialyzability ratios were found for As, Cr and Ni...
August 15, 2016: Food Chemistry
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