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- Author:
- Wang, Lu; Liu, Yufeng; Luo, You; Huang, Kuiying; Wu, Zhenqiang
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.6 pp. 1576-1582
- ISSN:
- 1520-5118
- Subject:
- acarbose; alpha-glucosidase; blood glucose; enzyme inhibitors; glycemic effect; guavas; high performance liquid chromatography; inhibitory concentration 50; leaves; mass spectrometry; procyanidins; quercetin; screening; structure-activity relationships; tea; ultrafiltration
- Abstract:
- ... Guava leaves tea (GLT) has a potential antihyperglycemic effect. Nevertheless, it is unclear which compound plays a key role in reducing blood sugar. In this study, GLT extract (IC₅₀ = 19.37 ± 0.21 μg/mL) exhibited a stronger inhibitory potency against α-glucosidase than did acarbose (positive control) at IC₅₀ = 178.52 ± 1.37 μg/mL. To rapidly identify the specific α-glucosidase inhibitor componen ...
- DOI:
- 10.1021/acs.jafc.7b05280
-
http://dx.doi.org/10.1021/acs.jafc.7b05280
- Author:
- Pan, Ting-tiao; Sun, Da-Wen; Pu, Hongbin; Wei, Qingyi
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.9 pp. 2180-2187
- ISSN:
- 1520-5118
- Subject:
- Alternaria alternata; Raman spectroscopy; detection limit; fruits; high performance liquid chromatography; markets; nanosilver; pears; pyridines; quantitative analysis; rapid methods; raw fruit; silver
- Abstract:
- ... A simple method based on surface-enhanced Raman scattering (SERS) was developed for the rapid determination of alternariol (AOH) in pear fruits using an easily prepared silver-nanoparticle (AgNP) substrate. The AgNP substrate was modified by pyridine to circumvent the weak affinity of the AOH molecules to the silver surface and to improve the sensitivity of detection. Quantitative analysis was per ...
- DOI:
- 10.1021/acs.jafc.7b05664
-
http://dx.doi.org/10.1021/acs.jafc.7b05664
- Author:
- Quijada, Jessica; Drake, Christopher; Gaudin, Elodie; El-Korso, Ramzi; Hoste, Hervé; Mueller-Harvey, Irene
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.9 pp. 2136-2142
- ISSN:
- 1520-5118
- Subject:
- Haemonchus contortus; Onobrychis viciifolia; Trichostrongylus colubriformis; abomasum; anthelmintics; digesta; digestion; digestive tract; feces; feeds; gastrointestinal nematodes; hazelnuts; high performance liquid chromatography; lambs; mass spectrometry; pellets; proanthocyanidins; procyanidins; rumen; small intestine; thiolysis
- Abstract:
- ... The variable anthelmintic efficacy of condensed tannins (CT) against gastrointestinal nematodes may depend on CT concentration, composition, or fate along the digestive tract. We analyzed CT concentration and composition by acetone–HCl–butanol and thiolysis coupled to HPLC-MS in digesta and feces of lambs. Lambs had been infected with Haemonchus contortus and Trichostrongylus colubriformis and rec ...
- DOI:
- 10.1021/acs.jafc.7b05538
-
http://dx.doi.org/10.1021/acs.jafc.7b05538
- Author:
- Xie, Yanli; Zhu, Xiaolu; Li, Yuan; Wang, Chen
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.5 pp. 1131-1139
- ISSN:
- 1520-5118
- Subject:
- Glycine max; anthocyanins; binding capacity; bioavailability; chelates; chelation; fluorescence emission spectroscopy; heat production; high performance liquid chromatography; hydrogen bonding; iron; pH; solubility; soybeans; van der Waals forces
- Abstract:
- ... The Fe(III) chelating activity of anthocyanin extracted from black soybean coats was investigated at pH 3.0, 5.0, 6.5, 7.0, and 7.4 with fluorescence spectroscopy and microscale thermophoresis (MST). Cyanidin-3-glucoside (C3G) was determined to be 98% of the total anthocyanin by high-performance liquid chromatography. The binding affinity (Kₐ) exhibited significant pH-dependent behavior: Kₐ was 9. ...
- DOI:
- 10.1021/acs.jafc.7b04719
-
http://dx.doi.org/10.1021/acs.jafc.7b04719
- Author:
- Song, Shuangyu; Zhu, Kechen; Han, Lijun; Sapozhnikova, Yelena; Zhang, Zihao; Yao, Wei
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.20 pp. 5031-5038
- ISSN:
- 1520-5118
- Subject:
- Procambarus clarkii; acetonitrile; crayfish; difenoconazole; high performance liquid chromatography; markets; meat; multiresidue analysis; pesticide residues; phosphates; propamocarb; shrimp; sodium chloride; solid phase extraction; statistical analysis; tandem mass spectrometry; China
- Abstract:
- ... In this study, a multi-residue analytical method using quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction and dispersive solid-phase extraction (d-SPE) cleanup, followed by high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS), was investigated for rapid determination of 60 pesticide residues in whole crayfish and crayfish meat. The final method used 10 mL ...
- DOI:
- 10.1021/acs.jafc.7b05339
-
http://dx.doi.org/10.1021/acs.jafc.7b05339
- Author:
- Meng, Xiu-Hua; Liu, Chang; Fan, Rong; Zhu, Li-Fang; Yang, Shi-Xiong; Zhu, Hong-Tao; Wang, Dong; Yang, Chong-Ren; Zhang, Ying-Jun
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.1 pp. 247-254
- ISSN:
- 1520-5118
- Subject:
- 2,2-diphenyl-1-picrylhydrazyl; Camellia; antioxidant activity; antioxidants; beverages; black tea; flavanols; gallic acid; glucosides; green tea; high performance liquid chromatography; leaves; mass spectrometry; spectral analysis; China
- Abstract:
- ... Camellia fangchengensis Liang et Zhong, belonging to the genus Camellia sect. Thea (Theaceae), is an endemic tea species to the south and southwest areas of Guangxi province, People’s Republic of China. Known as a wild tea plant, the leaves have been used for producing green tea or black tea by the local people of its growing area. HPLC and LC-MS analysis showed the leaves contain oligomeric catec ...
- DOI:
- 10.1021/acs.jafc.7b04572
-
http://dx.doi.org/10.1021/acs.jafc.7b04572
- Author:
- Liao, Xiaoyan; Hu, Fangli; Chen, Zilin
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.1 pp. 359-367
- ISSN:
- 1520-5118
- Subject:
- Osmanthus fragrans; bioactive compounds; cultivars; electrospray ionization mass spectrometry; fruit extracts; fruits; high performance liquid chromatography; quantitative analysis
- Abstract:
- ... Information on the chemical composition of Osmanthus fragrans fruits is still limited because there are many compounds present in low concentrations in the plant. In this work, the bioactive components in O. fragrans fruit extract were investigated by a new high-performance liquid chromatography electrospray ionization tandem mass spectrometry method, which allows sensitive analysis both in identi ...
- DOI:
- 10.1021/acs.jafc.7b05560
-
http://dx.doi.org/10.1021/acs.jafc.7b05560
- Author:
- Wang, Xinzhen; Guo, Lina; Gao, Liping; Shi, Xingxing; Zhao, Xuecheng; Ma, Xiubing; Xia, Tao; Wang, Yunsheng
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.1 pp. 63-69
- ISSN:
- 1520-5118
- Subject:
- Camellia sinensis; apical meristems; buds; catechin; epigallocatechin gallate; genes; high performance liquid chromatography; in situ hybridization; leaf primordia; mesophyll; metabolism; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction; shoot tips; spring; staining; tea
- Abstract:
- ... Early spring buds of the Camellia sinensis variety Shuchazao were separated into two parts, including the shoot tip (ST) and non-expanded young leaves (YL), in which the synthesis and accumulation of catechins in the two parts were assessed by high-performance liquid chromatography (HPLC), p-dimethylaminocinnamaldehyde (DMACA) staining, quantitative real-time polymerase chain reaction (qRT-PCR), a ...
- DOI:
- 10.1021/acs.jafc.7b03205
-
http://dx.doi.org/10.1021/acs.jafc.7b03205
- Author:
- Zhang, Jia-Rong; Tolchard, James; Bathany, Katell; Langlois d’Estaintot, Béatrice; Chaudiere, Jean
- Source:
- Journal of agricultural and food chemistry 2018 v.66 no.1 pp. 351-358
- ISSN:
- 1520-5118
- Subject:
- aqueous solutions; borohydrides; electrospray ionization mass spectrometry; high performance liquid chromatography; ionization; moieties; nuclear magnetic resonance spectroscopy; stereoisomers; tandem mass spectrometry
- Abstract:
- ... (+)-2,3-trans-3,4-cis-Leucocyanidin was produced by acidic epimerization of (+)-2,3-trans-3,4-trans-leucocyanidin synthesized by reduction of (+)-dihydroquercetin with NaBH₄, and structures of the two stereoisomers purified by C18- and phenyl-reverse-phase high-performance liquid chromatography (HPLC) were confirmed by NMR spectroscopy. We confirm that only 3,4-cis-leucocyanidin is used by leucoan ...
- DOI:
- 10.1021/acs.jafc.7b04380
-
http://dx.doi.org/10.1021/acs.jafc.7b04380
- Author:
- Wang, Siqi; Wang, Hengwei; Lv, Jiyang; Deng, Zixin; Cheng, Hairong
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.50 pp. 11020-11028
- ISSN:
- 1520-5118
- Subject:
- Candida maltosa; biorefining; byproducts; crystallization; erythritol; fermentation; gas chromatography-mass spectrometry; high performance liquid chromatography; wastes; yeasts
- Abstract:
- ... Erythritol, a natural sugar alcohol, is produced industrially by fermentation and crystallization, but this process leaves a large amount of waste erythritol mother liquor (WEML) which contains more than 200 g/L erythritol as well as other polyol byproducts. These impurities make it very difficult to crystallize more erythritol. In our study, an efficient process for the recovery of erythritol fro ...
- DOI:
- 10.1021/acs.jafc.7b04112
-
http://dx.doi.org/10.1021/acs.jafc.7b04112
- Author:
- Singh, Jashbir; Jayaprakasha, Guddadarangavvanahally K.; Patil, Bhimanagouda S.
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.50 pp. 11100-11108
- ISSN:
- 1520-5118
- Subject:
- Brassicaceae; arylsulfatase; cabbage; glucoiberin; high performance liquid chromatography; kohlrabi; mass spectrometry; progoitrin; rapid methods; sinigrin
- Abstract:
- ... The goal of our present research was to develop a simple and rapid method for the quantitation of desulfoglucosinolates (desulfoGLS) without using column chromatography. The proposed method involves extraction, concentration, incubation of glucosinolates with a sulfatase enzyme, and HPLC analysis. Identification of desulfoGLS in green kohlrabi was performed by LC-HR-ESI-QTOF-MS in positive-ionizat ...
- DOI:
- 10.1021/acs.jafc.7b04662
- CHORUS:
- 10.1021/acs.jafc.7b04662
-
http://dx.doi.org/10.1021/acs.jafc.7b04662
- Author:
- Henarejos-Escudero, Paula; Guadarrama-Flores, Berenice; Guerrero-Rubio, M. Alejandra; Gómez-Pando, Luz Rayda; García-Carmona, Francisco; Gandía-Herrero, Fernando
- Source:
- Journal of agricultural and food chemistry 2017 v.66 no.2 pp. 467-474
- ISSN:
- 1520-5118
- Subject:
- 2,4-D; Chenopodium quinoa; benzyladenine; betalains; callus; callus culture; cell lines; color; culture media; grains; high performance liquid chromatography; hydrophilicity; nitrogen; nutritive value; plant growth substances; seedlings; water solubility
- Abstract:
- ... Betalains are water-soluble plant pigments of hydrophilic nature with promising bioactive potential. Among the scarce edible sources of betalains is the grain crop quinoa (Chenopodium quinoa Willd), with violet, red, and yellow grains being colored by these pigments. In this work, callus cultures have been developed from differently colored plant varieties. Stable callus lines exhibited color and ...
- DOI:
- 10.1021/acs.jafc.7b04642
-
https://dx.doi.org/10.1021/acs.jafc.7b04642
- Author:
- Bragg, Paige
E.; Maust, Matthew D.; Panaccione, Daniel G.
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.49 pp. 10703-10710
- ISSN:
- 1520-5118
- Subject:
- Claviceps; Neosartorya; Zea mays; biosynthesis; corn; drugs; ergot; ergot alkaloids; fungi; genes; high performance liquid chromatography; hydrogenation; hydroxylation; mass spectrometry; mutants; mutation; oxidation; pathogens; sclerotia
- Abstract:
- ... Biosynthesis of the dihydrogenated forms of ergot alkaloids is of interest because many of the ergot alkaloids used as pharmaceuticals may be derived from dihydrolysergic acid (DHLA) or its precursor dihydrolysergol. The maize (Zea mays) ergot pathogen Claviceps gigantea has been reported to produce dihydrolysergol, a hydroxylated derivative of the common ergot alkaloid festuclavine. We hypothesiz ...
- DOI:
- 10.1021/acs.jafc.7b04272
- CHORUS:
- 10.1021/acs.jafc.7b04272
-
http://dx.doi.org/10.1021%2Facs.jafc.7b04272
- Author:
- Zhu, Yong-Zhe; Fu, Min; Jeong, In-Hong; Kim, Jeong-Han; Zhang, Chuan-Jie
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.49 pp. 10711-10718
- ISSN:
- 1520-5118
- Subject:
- Cunninghamella elegans; adverse effects; biochemical pathways; bioremediation; fenitrothion; fungi; hepatocytes; high performance liquid chromatography; mammals; mass spectrometry; metabolism; metabolites; metabolomics; nuclear magnetic resonance spectroscopy; toxicity
- Abstract:
- ... In this study, the detailed metabolic pathways of fenitrothion (FNT), an organophosphorus insecticide by Cunninghamella elegans, were investigated. Approximately 81% of FNT was degraded within 5 days after treatment with concomitant accumulation of four metabolites (M1–M4). The four metabolites were separated by high-performance liquid chromatography, and their structures were identified by mass s ...
- DOI:
- 10.1021/acs.jafc.7b04273
-
http://dx.doi.org/10.1021%2Facs.jafc.7b04273
- Author:
- Kubec, Roman; Curko, Petr; Urajová, Petra; Rubert, Josep; Hajšlová, Jana
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.48 pp. 10615-10620
- ISSN:
- 1520-5118
- Subject:
- Allium; amino acids; color; diodes; discoloration; garlic; high performance liquid chromatography; models; tandem mass spectrometry
- Abstract:
- ... Structures and formation pathways of compounds responsible for blue–green discoloration of processed garlic were studied in model systems. A procedure was developed for isolation of the color compounds and their tentative identification by high-performance liquid chromatography coupled to a diode array detector and tandem mass spectrometry. It was found that the pigment is a mixture of numerous py ...
- DOI:
- 10.1021/acs.jafc.7b04609
-
http://dx.doi.org/10.1021%2Facs.jafc.7b04609
- Author:
- Senica, Mateja; Stampar, Franci; Veberic, Robert; Mikulic-Petkovsek, Maja
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.48 pp. 10621-10629
- ISSN:
- 1520-5118
- Subject:
- Rosaceae; amygdalin; bioactive compounds; cultivars; cyanogenic glycosides; high performance liquid chromatography; human health; lethal dose; mass spectrometry; pears; phenolic compounds; seeds; wastes
- Abstract:
- ... In fruit production seeds are mostly regarded as waste, but for plants they represent a beginning of new life. Seeds accumulate toxic or health-beneficial compounds, and the elucidation of their metabolic profile is especially important to people who consume the entire fruit, including the seeds. The present research quantifies the levels of bioactive compounds (phenolics and cyanogenic glycosides ...
- DOI:
- 10.1021/acs.jafc.7b03408
-
http://dx.doi.org/10.1021%2Facs.jafc.7b03408
- Author:
- Wu, Jihong; Huo, Jiaying; Huang, Mingquan; Zhao, Mouming; Luo, Xuelian; Sun, Baoguo
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.48 pp. 10495-10504
- ISSN:
- 1520-5118
- Subject:
- antioxidant activity; catalase; glutathione; glutathione peroxidase; high performance liquid chromatography; human cell lines; malondialdehyde; oxidation; oxidative stress; reactive oxygen species; spectroscopy; superoxide dismutase
- Abstract:
- ... Peptides are rarely reported from Chinese Baijiu (Chinese liquor) because they are often present in very low concentrations in the complex matrix. A tetrapeptide, Ala-Lys-Arg-Ala (AKRA), was recently identified by high-performance liquid chromatography and quadrupole-time-of-flight-mass spectrometry (HPLC-Q-TOF-MS) from sesame flavor-type Baijiu at a concentration of 8.497 ± 0.753 μg/L (P > 0.05), ...
- DOI:
- 10.1021/acs.jafc.7b04815
-
http://dx.doi.org/10.1021%2Facs.jafc.7b04815
- Author:
- Fan, Xiaoming; Yuan, Deyi; Tian, Xiaoming; Zhu, Zhoujun; Liu, Meilan; Cao, Heping
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.47 pp. 10332-10349
- ISSN:
- 1520-5118
- Subject:
- Castanea; abscisic acid; biosynthesis; catkins; cytokinins; female flowers; females; flowering; genes; gibberellins; high performance liquid chromatography; hormones; indole acetic acid; male flowers; males; nutrients; quantitative polymerase chain reaction; sequence analysis; sexual development; signal transduction; starch; transcriptomics
- Abstract:
- ... Chinese chinquapin (Castanea henryi) nut provides a rich source of starch and nutrients as food and feed, but its yield is restricted by a low ratio of female to male flowers. Little is known about the developmental programs underlying sex differentiation of the flowers. To investigate the involvement of phytohormones during sex differentiation, we described the morphology of male and female flora ...
- DOI:
- 10.1021/acs.jafc.7b03755
- CHORUS:
- 10.1021/acs.jafc.7b03755
-
http://dx.doi.org/10.1021%2Facs.jafc.7b03755
- Author:
- Kaczmarska, Kornelia
T.; Chandra-Hioe, Maria V.; Zabaras, Dimitrios; Frank, Damian; Arcot, Jayashree
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.46 pp. 10064-10073
- ISSN:
- 1520-5118
- Subject:
- Lupinus; alpha-amylase; alpha-glucosidase; carbohydrate composition; dietary fiber; enzyme activity; fermentation; flame ionization; fructose; galactose; germination; glucose; high performance liquid chromatography; raffinose; refractive index; seeds; soy flour; soybeans; stachyose; starch; sucrose; yogurt
- Abstract:
- ... This study investigated the effect of germination and fermentation on the composition of carbohydrates in Australian sweet lupin. Specifically, the amount of sugars (sucrose, fructose, and glucose), starch, oligosaccharides (verbascose, stachyose, and raffinose), and dietary fiber were measured in germinated lupin seeds and fermented lupin flour, and compared with those in soy. High performance li ...
- DOI:
- 10.1021/acs.jafc.7b02986
-
http://dx.doi.org/10.1021%2Facs.jafc.7b02986
- Author:
- Peng, Xing-Rong; Wang, Xia; Dong, Jin-Run; Qin, Xu-Jie; Li, Zhong-Rong; Yang, Han; Zhou, Lin; Qiu, Ming-Hua
- Source:
- Journal of agricultural and food chemistry 2017 v.65 no.43 pp. 9453-9459
- ISSN:
- 1520-5118
- Subject:
- Alzheimer disease; Carthamus tinctorius; acetylcholinesterase; chemical composition; circular dichroism spectroscopy; coniferyl alcohol; environmental impact; enzyme activity; fertilizers; high performance liquid chromatography; hybrids; inhibitory concentration 50; nuclear magnetic resonance spectroscopy; pigeons; safflower seed; seeds; sinapyl alcohol; vegetable oil
- Abstract:
- ... Safflower (Carthamus tinctorius) is commercially cultivated for vegetable oil extracted from the seeds. However, during the production process of seed oil, a large amount of the oil cake is thrown away or fermented as fertilizer to improve the homing rate of pigeons. Therefore, to solve the ecological problem and develop its new function, we investigated the chemical constituents of a safflower se ...
- DOI:
- 10.1021/acs.jafc.7b03431
-
http://dx.doi.org/10.1021%2Facs.jafc.7b03431