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Journal of Agricultural and Food Chemistry

Shanshan Lv, Jiyou Gu, Ruojie Zhang, Yanhua Zhang, Haiyan Tan, David Julian McClements
In this study, vitamin E was encapsulated in oil-in-water nanoemulsions fabricated using a dual-channel microfluidizer. A long chain triacylglycerol (corn oil) was used as a carrier oil and a biosurfactant (quillaja saponin) was used as a natural emulsifier. The impact of vitamin-to-carrier oil ratio on the formation, storage stability, and bioaccessibility of the nanoemulsions was determined. The lipid droplet size formed during homogenization increased with increasing vitamin content, which was attributed to a large increase in lipid phase viscosity...
September 21, 2018: Journal of Agricultural and Food Chemistry
Veronika Mall, Ines Sellami, Peter Schieberle
1-Penten-3-one with its fresh and pungent smell at a very low odor threshold of 0.94 µg/L water has been characterized as impact aroma compound in many foods, such as grapefruit, orange juice, black tea, olive oil, or tomatoes. While its importance to the fresh sensation of unstored NFC orange juice was recently confirmed by aroma recombinates, a total loss was determined already after 4 weeks in NFC orange juice stored at 0 °C. Until now, the degradation pathway of this compound has not been clarified. Systematic model studies resulted in the identification of 1-hydroxy-3-pentanone and 4-hydroxy-3,8-decanedione as degradation products as well as S-(3-oxopentyl)-L-cysteine in the presence of the amino acid...
September 21, 2018: Journal of Agricultural and Food Chemistry
Xiaoliang Qi, Yue Yuan, Jianfa Zhang, Jeff W M Bulte, Wei Dong
We present an improved type of food gum (salecan) based hydrogels for oral delivery of insulin. Structural hydrogel formation was assessed with Fourier transform infrared spectroscopy, thermogravimetric analysis and X-ray diffraction. We found that the hydrogel modulus, morphology, and swelling properties can be controlled by varying the salecan dose during hydrogel formation. Insulin was introduced into the hydrogel using a swelling-diffusion approach and then further used a drug prototype. In vitro insulin release profiles demonstrated that the release of entrapped insulin was suppressed in acidic conditions, but markedly increased at neutral pH...
September 21, 2018: Journal of Agricultural and Food Chemistry
Lei Xiang, Tao Xiao, Peng-Fei Yu, Hai-Ming Zhao, Ce-Hui Mo, Yan-Wen Li, Hui Li, Quan-Ying Cai, Don-Mei Zhou, Ming-Hung Wong
Sorption of perfluorooctanoic acid (PFOA), a toxic and persistent organic pollutant, by various size fractions of an agricultural soil at environmentally relevant concentrations was evaluated. PFOA sorption to all fractions involved both film diffusion and intraparticle diffusion with the rate-limiting step by the latter. PFOA isotherm data fitted a linear model. Organic matter (OM), cation exchange capacity, pore volume, and the Brunauer-Emmett-Teller area played key roles in PFOA sorption. The sorption capacity followed the order of humic acid > clay (0...
September 21, 2018: Journal of Agricultural and Food Chemistry
Veronika Mall, Ines Sellami, Peter Schieberle
Despite several technological efforts to maximize the quality and shelf life of chilled stored not-from-concentrate (NFC) orange juice, changes in the overall aroma profile might occur during storage. Besides the degradation of terpenoids, a loss of the aroma-active aldehydes, hexanal, octanal, nonanal and decanal as well-as of 1-penten-3-one were recently confirmed as a major cause for the changes in the aro-ma profile of orange juice even during storage under aseptic conditions at 0 °C. To unravel the fate of the aroma-active aldehydes, model experiments were carried out considering the oxidation into the corresponding acids as well as a reaction with free amino acids present in orange juice...
September 21, 2018: Journal of Agricultural and Food Chemistry
Zhongbao Zhang, Zhibin Liang, Longfei Yin, Qing X Li, Zhongyi Wu
Flavonoids are characteristic in maize and have diverse biological functions. C-Glycosylflavones are neuroprotective against β-amyloid-induced tau hyperphosphorylation and neurotoxicity in SH-SY5Y cells, which is relevant to Alzheimer's disease prevention and treatment. The content of the C-glycosylflavones eriodictyol, luteolin, isoorientin and maysin varied in pollens, silks, tassels and seeds among five maize varieties. Eriodictyol content was high (51 - 322 ng/g dw) in pollens, while luteolin content was low (0...
September 21, 2018: Journal of Agricultural and Food Chemistry
Pandi He, Shikai Yan, Jiaojiao Zheng, Yuxing Gao, Shuhan Zhang, Zhigang Liu, Xuebo Liu, Chunxia Xiao
Eriodictyol, a natural flavonoid mainly distributed in citrus fruits and peanut, has been well-documented with possession of excellent anti-inflammatory, antioxidant, and anticancer bioactivities. This work focus on the protective effects of eriodictyol on LPS-induced neuroinflammation, amyloidogenesis, cognitive impairment, and the potential mechanisms involved. Behavioral tests and histological examinations showed that eriodictyol significantly prevented the memory and neuronal damage triggered by LPS. Consistently, eriodictyol (100 mg/kg) reduced the formation of Aβ1-42 by 28...
September 21, 2018: Journal of Agricultural and Food Chemistry
Xushen Han, Feng Hong, Gang Liu, Jie Bao
Agricultural lignocellulose biomass generally contains certain amounts of water-soluble carbohydrates (WSC) such as glucose, fructose, or sucrose. These sugars are generally degraded in pretreatment at high temperature or discharged with wastewater in a detoxification process. This study proposed an approach of utilizing frequently ignored water-soluble carbohydrates for promotion of cellulosic l-lactic acid production. A simple solid state fermentation was performed during a corn stover storage period to convert the sugars into l-lactic acid and then a dry biorefining technology was applied to convert cellulose and hemicellulose fractions into the same l-lactic acid product...
September 21, 2018: Journal of Agricultural and Food Chemistry
Krishna N Reddy, James V Cizdziel, Martin M Williams, Jude E Maul, Agnes M Rimando, Stephen O Duke
Controversy continues to exist regarding whether the transgene for glyphosate resistance (GR) and/or glyphosate applied to GR crops adversely affect plant mineral content. Field studies were conducted in 2013 and 2014 in Stoneville, MS and Urbana, IL to examine this issue in maize. At each location, the experiment was conducted in fields with no history of glyphosate application and fields with several years of glyphosate use preceding the study. Neither glyphosate nor the GR transgene affected yield or mineral content of leaves or seed, except for occasional (<5%) significant effects that were inconsistent across minerals, treatments, and environments...
September 21, 2018: Journal of Agricultural and Food Chemistry
Mengdie Fan, Qunfei Xiao, Jianchun Xie, Jie Cheng, Baoguo Sun, Wenbin Du, Yaxin Wang, Tianze Wang
The unique flavor of Beijing Youji (BJY) chicken broth compared with that of commercial broilers (CB) was investigated by solvent-assisted flavor evaporation combined with AEDA/GC-O (aroma extract dilution analysis of gas chromatography-olfactometry), quantitation, and aroma recombination. A total of 71 odorants with almost the same major odorants (≥10 ng/g broth) were found by GC-O in both BJY and CB broths. However, BJY broth had thirty-two more extra odorants than CB broth, indicating the rich fragrance of the former...
September 21, 2018: Journal of Agricultural and Food Chemistry
Lu Liu, Tianlin Shen, Yuechao Yang, Bin Gao, Yuncong C Li, Jiazhuo Xie, Yafu Tang, Shugang Zhang, Zhonghua Wang, Jianqiu Chen
To improve nitrogen (N) use efficiency and minimize environmental pollution caused by fertilizer over use, novel bio-based large tablet controlled-release urea (LTCRU) was prepared by using bio-based coating materials to coat large tablet urea (LTU) derived from urea prills (U). Nano fumed silica (NFS) was added to the bio-based coating materials to improve the slow-release properties. Surface area of the LTU and U was measured by three-dimension scanning. Compared with U, LTU had smaller surface area-to-weight ratio, which can reduce the coating materials...
September 20, 2018: Journal of Agricultural and Food Chemistry
Jiyuan Liu, Yifan Li, Zhen Tian, Hong Sun, Xi'en Chen, Shengli Zheng, Yalin Zhang
Glutathione S-transferases (GSTs) are important detoxification enzymes involved in the development of metabolic resistance in Plutella xylostella. Uncovering the interactions between representative PxGSTs and the inhibitor S-hexyl glutathione (GTX), helps in the development of effective PxGST inhibitors for resistance management. As the PxGST most severely inhibited by GTX, PxGSTσ (sigma-class PxGST) adopts the canonical fold of insect GSTs. The formation of the PxGSTσ-GTX complex is mainly driven by H-bond and hydrophobic interactions derived from the side chains of favorable residues...
September 20, 2018: Journal of Agricultural and Food Chemistry
Xiaoxia Chen, Lina Zhang, Bhesh Bhandari, Peng Zhou
The glucose glycation of α-Lactalbumin and β-Lactoglobulin at 50 C in glycerol-based liquid system was investigated to evaluate the effect of water activity on glycation and site-specificity in glycerol matrix. Glycation extent during the reaction was determined using o-phthalaldehyde (OPA) method as well as ultra-performance liquid chromatography combined with electro-spray ionization mass spectrum (UPLC-ESI-MS). Glycation sites were identified by data-independent acquisition LC-MS (LC-MSE). The surface potential achieved by PyMOL and tertiary structure determined by circular dichroism (CD) were used to assist the analysis of the glycation site-specificity in glycerol matrix...
September 19, 2018: Journal of Agricultural and Food Chemistry
Chunchao Zhao, Jia Chen, Jianhua Shao, Jie Shen, Kehuan Li, Wenyan Gu, Sihui Li, Judi Fan
Nine new neolignan glycosides (1-9), viburfordosides A-I, two new neolignans, fordianes A and B (10, 11), and seven known analogues (12-18) have been isolated and identified from the fruits of Viburnum fordiae Hance. The structures and absolute configurations of undescribed neolignan constituents were identified by chemical methods and spectroscopic analyses. The α-glucosidase inhibitory, ABTS•+ and DPPH• scavenging and anti-inflammatory activities of these secondary metabolites were evaluated. Some of them exhibited significant potency in inhibiting α-glucosidase and scavenging free radicals...
September 19, 2018: Journal of Agricultural and Food Chemistry
Agnese Aguzzoni, Michele Bassi, Peter Robatscher, Massimo Tagliavini, Werner Tirler, Francesca Scandellari
The 87 Sr/86 Sr ratio of a produce is generally linked with the soil geological features of the growing areas. This study aimed at assessing to which extent the addition of external Sr by agricultural practices, like irrigation and mineral nutrient supply, influences this relationship. In a first experiment, oat plants in two soils reflected the 87 Sr/86 Sr of the soil. However, this link was significantly altered at increasing levels of external Sr soil supplies. In a second experiment, apple trees transplanted in pots modified their original 87 Sr/86 Sr, which became progressively closer to the soil Sr ratio...
September 19, 2018: Journal of Agricultural and Food Chemistry
Junfan Niu, Zhaopeng Zhang, Jingyue Tang, Gang Tang, Jiale Yang, Weichen Wang, Hong Huo, Na Jiang, Jianqiang Li, Yongsong Cao
Due to high volatility and water solubility, 2,4-D can easily enter into the atmosphere and water bodies by volatilization, drift, leaching or runoff, which results in potential threats to the environment and human health. The physicochemical properties of pesticides can be regulated by preparing their ionic liquids. In this work, a series of dicationic ionic liquids (DILs) of 2,4-D were prepared to reduce its environmental risk and enhance herbicidal activity. The solubility, octanol-water partition coefficient, surface tension, and volatilization rate results of DILs showed that these properties could be optimized by choosing appropriate counter cations...
September 19, 2018: Journal of Agricultural and Food Chemistry
Mangala Gowri Ponnapalli, Madhu Babu Sura, Renu Sudhakar, Gokulapriya Govindarajalu, Puran Singh Sijwali
The biotransformation of the front-line antimalarial drug, artemisinin (1) by the filamentous fungus Aspergillus flavus MTCC-9167 was investigated. Incubation of compound 1 with A. flavus afforded a new hydroxy derivative (2) along with three known metabolites (3-5). The new compound was characterized as 14-hydroxydeoxyartemisinin (2) by extensive spectroscopic data analysis (IR, 1H, 13C NMR, HSQC, HMBC, COSY, NOESY and HR-ESIMS). The known metabolites were identified as deoxyartemisinin (3), artemisinin G (4), and 4α-hydroxydeoxyartemisinin (5)...
September 19, 2018: Journal of Agricultural and Food Chemistry
Ângela Guerra, Maria Fatima Duarte, Iola F Duarte
Recognition of neoplasic metabolic reprogramming as one of cancer's hallmarks has paved the way for developing novel metabolism-targeted therapeutic approaches. The use of plant-derived natural bioactive compounds for this endeavor is especially promising, due to their diversiform structures and multiple targets. Hence, over the last decade, a growing number of studies have assessed the impact of phytochemicals on tumor cell metabolism, aiming at improving current knowledge on their mechanisms of action and, at the same time, at evaluating their potential as anticancer metabolic modulators...
September 19, 2018: Journal of Agricultural and Food Chemistry
Daisuke Ando, Takuo Fujisawa, Toshiyuki Katagi
The metabolic fate of a new fungicide, mandestrobin, labeled with 14 C at the phenoxy or benzyl ring was examined in wheat after a single spray application at 300 g/ha. Mandestrobin penetrated into foliage over time, with both radiolabels showing similar 14 C distribution in wheat, and 2.8-3.3% of the total radioactive residue remained on the surface of straw at the final harvest. In foliage, mandestrobin primarily underwent mono-oxidation at the phenoxy ring to produce 4-hydroxy or 2-/5-hydroxymethyl derivatives, followed by their subsequent formation of malonylglucose conjugates...
September 19, 2018: Journal of Agricultural and Food Chemistry
Huirong Yang, Xuyan Zong, Yingchao Xu, Yingjie Zeng, Haifeng Zhao
The effects of wheat-gluten hydrolysates (WGH) and their ultrafiltration fractions on multiple-stress tolerance and ethanol production in yeast during very-high-gravity (VHG) fermentation were examined. The results showed that WGH and WHG-ultrafiltration-fraction supplementations could significantly enhance the growth and viability of yeast and further improve the tolerance of yeast to osmotic stress and ethanol stress. The addition of MW < 1 kDa fractions led to 51.08 and 21.70% enhancements in cell-membrane integrity, 30...
September 19, 2018: Journal of Agricultural and Food Chemistry
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