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You searched for: Journal Journal of agricultural and food chemistry Remove constraint Journal: Journal of agricultural and food chemistry Publication Year 2012 Remove constraint Publication Year: 2012 Source 2012 v.60 no.29 Remove constraint Source: 2012 v.60 no.29
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1. Activity-Guided Discovery of (S)-Malic Acid 1′-O-β-Gentiobioside as an Angiotensin I-Converting Enzyme Inhibitor in Lettuce (Lactuca sativa)

Author:
Lagemann, Annika; Dunkel, Andreas; Hofmann, Thomas
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7211-7217
ISSN:
1520-5118
Subject:
Lactuca sativa; aldosterone; angiotensin I; angiotensin II; antihypertensive agents; blood pressure; fractionation; functional foods; glycosidases; glycosides; hydrochloric acid; hydrolysis; inhibitory concentration 50; ion exchange chromatography; lettuce; nuclear magnetic resonance spectroscopy; peptidyl-dipeptidase A; phytochemicals; renin; saliva; stomach
Abstract:
... Angiotensin-converting enzyme (ACE), playing a crucial role in the renin angiotensin aldosterone system, is well-known to catalyze the conversion of the decapeptide angiotensin I into the physiologically active octapeptide angiotensin II, triggering blood pressure increasing mechanisms. To meet the demand for natural phytochemicals as antihypertensive agents in functional food development, extract ...
DOI:
10.1021/jf3022157
PubMed:
22762370

2. A Novel Green Chemistry Method for Nonaqueous Extraction and High-Performance Liquid Chromatography Detection of First-, Second-, and Third-Generation Tetracyclines, 4-Epitetracycline, and Tylosin in Animal Feeds

Author:
Granados-Chinchilla, Fabio; Sánchez, Jorge; García, Fernando; Rodríguez, César
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7121-7128
ISSN:
1520-5118
Subject:
animal nutrition; chlortetracycline; correlation; doxycycline; feeds; green chemistry; high performance liquid chromatography; minocycline; oxytetracycline; solid phase extraction; tetracycline; tylosin; Costa Rica
Abstract:
... Although tetracyclines and macrolides are common additives for animal nutrition, methods for their simultaneous determination in animal feeds are nonexistent. By coupling an organic extraction and solid-phase extraction cleanup to a high-performance liquid chromatography separation and a nonaqueous postcolumn derivatization, we succeeded in detecting from 0.2 to 24.0 μg kg–¹ of tetracycline, oxyte ...
DOI:
10.1021/jf301403f
PubMed:
22738432

3. Are the Wild and Laboratory Insect Populations Different in Semiochemical Emission? The Case of the Medfly Sex Pheromone

Author:
Vaníčková, Lucie; do Nascimento, Ruth Rufino; Hoskovec, Michal; Ježková, Zuzana; Břízová, Radka; Tomčala, Aleš; Kalinová, Blanka
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7168-7176
ISSN:
1520-5118
Subject:
Ceratitis capitata; acetone; beta-pinene; bornyl acetate; chemical composition; electroantennography; females; gas chromatography; geraniol; insects; males; mass spectrometry; sex pheromones; sterile insect technique
Abstract:
... The medfly (Ceratitis capitata) is one of the major agricultural pests controlled through sterile insect technique (SIT) programs. We studied the chemical composition of the volatiles released by calling males from one laboratory and two wild C. capitata populations using two-dimensional gas chromatography with time-of-flight mass spectrometric detection (GC × GC/TOFMS) and gas chromatography with ...
DOI:
10.1021/jf301474d
PubMed:
22741541

4. Bioaccessibility of Tocopherols, Carotenoids, and Ascorbic Acid from Milk- and Soy-Based Fruit Beverages: Influence of Food Matrix and Processing

Author:
Cilla, Antonio; Alegría, Amparo; de Ancos, Begoña; Sánchez-Moreno, Concepción; Cano, M. Pilar; Plaza, Lucía; Clemente, Gonzalo; Lagarda, María J.; Barberá, Reyes
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7282-7290
ISSN:
1520-5118
Subject:
alpha-tocopherol; ascorbic acid; beverages; bioavailability; carotenoids; food matrix; heat treatment; high pressure treatment; skim milk; soymilk; whole milk
Abstract:
... A study was made of the effect of high-pressure processing (HPP) and thermal treatment (TT) on plant bioactive compounds (tocopherols, carotenoids, and ascorbic acid) in 12 fruit juice–milk beverages and of how the food matrix [whole milk (JW), skimmed milk (JS), and soy milk (JSy)] modulates their bioaccessibility (%). HPP (400 MPa/40 °C/5 min) produced a significant decrease in carotenoid and as ...
DOI:
10.1021/jf301165r
PubMed:
22738607

5. Bioevaluation of Human Serum Albumin–Hesperidin Bioconjugate: Insight into Protein Vector Function and Conformation

Author:
Ding, Fei; Diao, Jian-Xiong; Sun, Ye; Sun, Ying
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7218-7228
ISSN:
1520-5118
Subject:
absorption; bioactive properties; bioavailability; blood plasma; citrus fruits; flavanones; fluorescence; hesperidin; human serum albumin; humans; physiological response; simulation models; spectral analysis
Abstract:
... Hesperidin is a flavanone glycoside widely available for dietary intake in citrus fruits or citrus fruit derived products; however, exhaustive and reliable data are scarcely available for biological activity when it exerts protective health effects in humans. The principal intent of this work is to check binding domain and structural changes of human serum albumin (HSA), the primary carrier of fla ...
DOI:
10.1021/jf300424w
PubMed:
22702966

6. Biosynthesis of 15N3-Labeled Enniatins and Beauvericin and Their Application to Stable Isotope Dilution Assays

Author:
Hu, Ling; Rychlik, Michael
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7129-7136
ISSN:
1520-5118
Subject:
Fusarium; barley; biosynthesis; chemical structure; detection limit; foods; isotope dilution technique; nuclear magnetic resonance spectroscopy; oats; rye; stable isotopes; wheat
Abstract:
... The first stable isotope dilution assay for the determination of enniatins A, A1, B, and B1 and beauvericin was developed. The ¹⁵N₃-labeled enniatins and beauvericin were biosynthesized by feeding two Fusarium strains Na¹⁵NO₃ and subsequently isolated from the fungal culture. The chemical structures of the biosynthesized products were characterized by LC-MS/MS and ¹H NMR. Standard solutions of ¹⁵N ...
DOI:
10.1021/jf3015602
PubMed:
22734473

7. Capability of Lactobacillus plantarum IFPL935 To Catabolize Flavan-3-ol Compounds and Complex Phenolic Extracts

Author:
Sánchez-Patán, Fernando; Tabasco, Raquel; Monagas, María; Requena, Teresa; Peláez, Carmen; Moreno-Arribas, M. Victoria; Bartolomé, Begoña
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7142-7151
ISSN:
1520-5118
Subject:
Lactobacillus plantarum; flavanols; intestinal microorganisms; metabolism; metabolites; microbial growth; phenolic acids; proanthocyanidins; procyanidins
Abstract:
... Lactobacillus plantarum IFPL935 was incubated with individual monomeric flavan-3-ols and dimeric A- and B-type procyanidins to identify new metabolites and to determine the effect of compound structural features on bacterial growth and catabolism. Complex extracts rich in A-type proanthocyanidins and phenolic acids from cranberry were also tested. The results showed that L. plantarum IFPL935 exhib ...
DOI:
10.1021/jf3006867
PubMed:
22646528

8. Characterization of Glucocerebrosides and the Active Metabolite 4,8-Sphingadienine from Arisaema amurense and Pinellia ternata by NMR and CD Spectroscopy and ESI-MS/CID-MS

Author:
Rozema, Evelien; Popescu, Ruxandra; Sonderegger, Harald; Huck, Christian W.; Winkler, Johannes; Krupitza, Georg; Urban, Ernst; Kopp, Brigitte
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7204-7210
ISSN:
1520-5118
Subject:
Arisaema; Pinellia ternata; apoptosis; cell proliferation; cytotoxicity; digestive system; dissociation; eggplants; foods; hydrolysis; mass spectrometry; metabolites; nuclear magnetic resonance spectroscopy; rhizomes; silica gel; sphingolipids; spinach
Abstract:
... Sphingolipid metabolites regulate cellular processes such as cell proliferation, differentiation, and apoptosis. In this study, glucocerebrosides (GluCer) from rhizomes of Arisaema amurense and Pinellia ternata were fully characterized using 1- and 2-dimensional nuclear magnetic spin resonance (NMR) and circular dichroism (CD) spectroscopy and tandem collision-induced dissociation mass spectrometr ...
DOI:
10.1021/jf302085u
PubMed:
22769731

9. Classification and Characterization of Manuka Honeys Based on Phenolic Compounds and Methylglyoxal

Author:
Oelschlaegel, Stefanie; Gruner, Margit; Wang, Pang-Ning; Boettcher, Anja; Koelling-Speer, Isabelle; Speer, Karl
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7229-7237
ISSN:
1520-5118
Subject:
4-hydroxybenzoic acid; antimicrobial properties; benzoic acid; flavonoids; honey; kojic acid; solid phase extraction; syringic acid; New Zealand
Abstract:
... Manuka honey from New Zealand is often considered to be a medicinal product of special value due to its high level of antimicrobial activity. Therefore, the distinct authentication of its botanical origin is of great importance. Aside from the common pollen analysis, it is in this respect particularly the analysis of the phenolic acids, flavonoids, and norisoprenoids that is described as useful. I ...
DOI:
10.1021/jf300888q
PubMed:
22676798

10. Determination and Quantification of γ-Glutamyl-valyl-glycine in Commercial Fish Sauces

Author:
Kuroda, Motonaka; Kato, Yumiko; Yamazaki, Junko; Kai, Yuko; Mizukoshi, Toshimi; Miyano, Hiroshi; Eto, Yuzuru
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7291-7296
ISSN:
1520-5118
Subject:
derivatization; fish sauce; glutathione; screening; sensory evaluation; China; Italy; Japan; Korean Peninsula; Thailand; Vietnam
Abstract:
... It was recently reported that kokumi substances such as glutathione are perceived through the calcium-sensing receptor (CaSR). In addition, screening by the CaSR assay and sensory evaluation revealed that γ-glutamyl-valyl-glycine (γ-Glu-Val-Gly) was a potent kokumi peptide. In this study, the quantities of γ-Glu-Val-Gly in various commercial fish sauces originating from Vietnam (Nuoc Mum), Thailan ...
DOI:
10.1021/jf3012932
PubMed:
22747195

11. Distribution of Hydroxytyrosol and Hydroxytyrosol Acetate in Olive Oil Emulsions and Their Antioxidant Efficiency

Author:
Lisete-Torres, Patrícia; Losada-Barreiro, Sonia; Albuquerque, Hélio; Sánchez-Paz, Verónica; Paiva-Martins, Fátima; Bravo-Díaz, Carlos
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7318-7325
ISSN:
1520-5118
Subject:
acetates; antioxidants; emulsions; foods; olive oil
Abstract:
... We employed a kinetic method to determine the distributions of the antioxidants hydroxytyrosol (HT) and hydroxytyrosol acetate (HTA) between the oil, aqueous, and interfacial regions of a model food emulsion composed of stripped olive oil, acidic water, and a blend of Tween 80 and Span 80 [hydrophilic–lipophilic balance (HLB) = 8.05] as an emulsifier. HT is oil-insoluble, but HTA is both oil- and ...
DOI:
10.1021/jf301998s
PubMed:
22720906

12. Distribution of Protein Oxidation Products in the Proteome of Thermally Processed Milk

Author:
Meyer, Bianca; Baum, Florian; Vollmer, Gregor; Pischetsrieder, Monika
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7306-7311
ISSN:
1520-5118
Subject:
proteome; lactalbumin; alphaS1-casein; Western blotting; food processing; physicochemical properties; milk; oxidation; gel electrophoresis; beta-lactoglobulin
Abstract:
... During thermal milk processing, severe oxidation can occur, which alters the technological and physiological properties of the milk proteins. Due to differences in composition and physicochemical properties, it can be expected that the particular milk proteins are differently affected by oxidative damage. Therefore, the protein-specific distribution of oxidation products in the heated milk proteom ...
DOI:
10.1021/jf301666r
PubMed:
22746820

13. Effect of Feeding Intensity and Milking System on Nutritionally Relevant Milk Components in Dairy Farming Systems in the North East of England

Author:
Stergiadis, Sokratis; Leifert, Carlo; Seal, Chris J.; Eyre, Mick D.; Nielsen, Jacob H.; Larsen, Mette K.; Slots, Tina; Steinshamn, Håvard; Butler, Gillian
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7270-7281
ISSN:
1520-5118
Subject:
alpha-tocopherol; beta-lactoglobulin; conjugated linoleic acid; dairy farming; farming systems; fatty acid composition; milk; milk quality; milking; milking parlors; multivariate analysis; omega-3 fatty acids; production technology; England
Abstract:
... There is increasing concern that the intensification of dairy production reduces the concentrations of nutritionally desirable compounds in milk. This study therefore compared important quality parameters (protein and fatty acid profiles; α-tocopherol and carotenoid concentrations) in milk from four dairy systems with contrasting production intensities (in terms of feeding regimens and milking sys ...
DOI:
10.1021/jf301053b
PubMed:
22737968

14. Effect of Steam Explosion Treatment on Barley Bran Phenolic Compounds and Antioxidant Capacity

Author:
Gong, Lingxiao; Huang, Luolian; Zhang, Ying
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7177-7184
ISSN:
1520-5118
Subject:
antioxidant activity; barley bran; correlation; ferulic acid; gallic acid; high performance liquid chromatography; p-coumaric acid
Abstract:
... A steam explosion pretreatment process followed by methanol extraction has been applied for releasing and extracting phenolic compounds, as well as other effective components, from barley bran. The steam explosion treatment was performed at different temperatures ranging from 210 to 250 °C, with a residence time of 30 s. The effect of residence time was also studied in the range 10 s to 120 s at 2 ...
DOI:
10.1021/jf301599a
PubMed:
22708804

15. Effect of the Chlorinated Washing of Minimally Processed Vegetables on the Generation of Haloacetic Acids

Author:
Cardador, Maria Jose; Gallego, Mercedes
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7326-7332
ISSN:
1520-5118
Subject:
risk; vegetables; derivatization; detection limit; sanitizing; chlorine; headspace analysis; food industry; chlorination; byproducts; human health; haloacetic acids; mass spectrometry; washing; disinfection; fresh-cut foods; drinking water; gas chromatography; carcinogenicity; United States
Abstract:
... Chlorine solutions are usually used to sanitize fruit and vegetables in the fresh-cut industry due to their efficacy, low cost, and simple use. However, disinfection byproducts such as haloacetic acids (HAAs) can be formed during this process, which can remain on minimally processed vegetables (MPVs). These compounds are toxic and/or carcinogenic and have been associated with human health risks; t ...
DOI:
10.1021/jf302591u
PubMed:
22747435

16. Effects of Dietary Sodium Selenite and Selenium Yeast on Antioxidant Enzyme Activities and Oxidative Stability of Chicken Breast Meat

Author:
Ahmad, Hussain; Tian, Jinke; Wang, Jianjun; Khan, Muhammad Ammar; Wang, Yuanxiao; Zhang, Lili; Wang, Tian
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7111-7120
ISSN:
1520-5118
Subject:
antioxidant activity; breast meat; chickens; enzyme activity; glutathione peroxidase; lipid peroxidation; oxidative stability; selenium; sodium selenite; superoxide dismutase; yeasts
Abstract:
... The effects of sodium selenite (SS) and selenium yeast (SY) alone and in combination (MS) on the selenium (Se) content, antioxidant enzyme activities (AEA), total antioxidant capacity (TAC), and oxidative stability of chicken breast meat were investigated. The results showed that the highest (p < 0.05) glutathione peroxidase (GSH-Px) activity was found in the SS-supplemented chicken breast meat; h ...
DOI:
10.1021/jf3017207
PubMed:
22732007

17. Factors Influencing Phenolic Compounds in Table Olives (Olea europaea)

Author:
Charoenprasert, Suthawan; Mitchell, Alyson
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7081-7095
ISSN:
1520-5118
Subject:
Mediterranean diet; Olea europaea; antioxidants; chronic diseases; cultivars; hydrolysis; oleuropein; olive oil; olives; phenolic compounds; ripening; risk
Abstract:
... The Mediterranean diet appears to be associated with a reduced risk of several chronic diseases including cancer and cardiovascular and Alzheimer’s diseases. Olive products (mainly olive oil and table olives) are important components of the Mediterranean diet. Olives contain a range of phenolic compounds; these natural antioxidants may contribute to the prevention of these chronic conditions. Cons ...
DOI:
10.1021/jf3017699
PubMed:
22720792

18. Human Milk Fat Globules from Different Stages of Lactation: A Lipid Composition Analysis and Microstructure Characterization

Author:
Zou, Xiao-Qiang; Guo, Zheng; Huang, Jian-Hua; Jin, Qing-Zhe; Cheong, Ling-Zhi; Wang, Xing-Guo; Xu, Xue-Bing
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7158-7167
ISSN:
1520-5118
Subject:
cholesterol; colostrum; fat globules; fatty acid composition; human milk fat; lactation; lipid content; microstructure; milk; milk fat; mothers; phospholipids; physicochemical properties; polyunsaturated fatty acids; sphingomyelins; temperature
Abstract:
... The physicochemical properties of human milk fat globules (MFG) at different lactation stages from Danish mothers and the microstructure changes of MFG membrane (MFGM) at varied temperatures were investigated, and the relationship between chemical composition and the microstructure of MFGM was elucidated. The fat content in MFG was found to be significantly increased as lactation progressed, and c ...
DOI:
10.1021/jf3013597
PubMed:
22747344

19. Inhibition of Gastrointestinal Lipolysis by Green Tea, Coffee, and Gomchui (Ligularia fischeri) Tea Polyphenols during Simulated Digestion

Author:
Cha, Kwang Hyun; Song, Dae-Geun; Kim, Sang Min; Pan, Cheol-Ho
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7152-7157
ISSN:
1520-5118
Subject:
Ligularia; absorption; beverages; bioavailability; digestion; gastrointestinal system; green tea; inhibitory concentration 50; isomers; lipolysis; polyphenols; triacylglycerol lipase
Abstract:
... Green tea, coffee, and gomchui (Ligularia fischeri) tea, which are rich in polyphenols, may exhibit antiobesity effects by inhibiting pancreatic lipase. However, the bioavailability of some polyphenols is poor due to either degradation or absorption difficulties in the gastrointestinal tract, thus making their beneficial effects doubtful. This study was conducted to evaluate the inhibitory effect ...
DOI:
10.1021/jf301047f
PubMed:
22730927

20. Insecticidal and Acetylcholine Esterase Inhibition Activity of Apiaceae Plant Essential Oils and Their Constituents against Adults of German Cockroach (Blattella germanica)

Author:
Yeom, Hwa-Jeong; Kang, Jae Soon; Kim, Gil-Hah; Park, Il-Kwon
Source:
Journal of agricultural and food chemistry 2012 v.60 no.29 pp. 7194-7203
ISSN:
1520-5118
Subject:
Anethum graveolens; Blattella germanica; Carum carvi; Cuminum cyminum; Trachyspermum ammi; acetylcholine; alpha-pinene; carvacrol; carvone; cumin; dill; essential oils; fumigants; gamma-terpinene; imagos; inhibitory concentration 50; insecticidal properties; oils; p-cymene; thymol; toxicity
Abstract:
... We evaluated the insecticidal and acetylcholine esterase (AChE) inhibition activity of 11 Apiaceae plant essential oils and their constituents in adult male and female Blattella germanica. Of the 11 Apiaceae plant essential oils tested, dill (Anethum graveolens), carvi (Carum carvi), and cumin (Cuminum cyminum) demonstrated >90% fumigant toxicity against adult male German cockroaches at a concentr ...
DOI:
10.1021/jf302009w
PubMed:
22746406