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Suman Mishra, Jinny Willis, Juliet Ansell, John Alexander Monro
Kiwifruit is a carbohydrate food of low glycaemic potency which could potentially be exchanged for starch-based foods in management of postprandial glycaemia. The effect of equicarbohydrate partial exchange of kiwifruit varieties 'Hayward' green (GR) and 'Zesy002' (SunGold; SG) for a starchy wheat-based breakfast cereal (WB) on the characteristics of the postprandial glycaemic response and satiety was therefore determined. A total of twenty non-diabetic subjects (mean age 36 years; mean BMI 24·5 kg/m(2)) consumed four meals, each containing 40 g available carbohydrate, in random order, after an overnight fast...
2016: Journal of Nutritional Science
Robert Marshall Beresford, Joy Lorraine Tyson, Warwick Ralph Henshall
A weather-based disease prediction model for bacterial canker of kiwifruit (known worldwide as Psa; Pseudomonas syringae pv. actinidiae biovar 3) was developed using a new mechanistic scheme for bacterial disease forecasters, the multiplication and dispersal concept. Bacterial multiplication is estimated from a temperature function, the M index, accumulated from hourly air temperature over 3 days for hours when the leaf canopy is wet. Rainfall provides free water to move inoculum to infection sites and the daily risk indicator, the R index, is the 3-day accumulation of the M index, output on days with total rainfall > 1 mm; otherwise R is zero...
October 17, 2016: Phytopathology
Mehtap Haktanir Abul, Selim Dereci, Sadan Hacisalihoglu, Fazil Orhan
BACKGROUND: Although kiwifruit is known as a common cause of food allergy, population based studies concerning the prevalence of kiwifruit allergy does not exist. We aimed to determine the prevalence and clinical characteristics of IgE-mediated kiwifruit allergy in 6-18 year old urban schoolchildren in a region where kiwifruit is widely cultivated METHODS: This cross-sectional study recruited 20,800 of the randomly selected 6-18-year-old urban schoolchildren from the Rize city in the eastern Black Sea region of Turkey during 2013...
October 12, 2016: Pediatric Allergy and Immunology
Dengxin Fan, Hui Li, Shuyun Shi, Xiaoqing Chen
Rapid and selective extraction and enrichment of trace bioactive analytes from complex matrices were of significant importance for efficient and accurate quantification. Here, novel hollow molecular imprinted polymers (HMIPs) were prepared using caffeic acid (CA) as template, 4-vinylpyridine (4-VP) as functional monomer, and Fe3O4@SiO2 as sacrificial support. Fourier transform infrared spectrometer (FT-IR), transmission electron microscopy (TEM), nitrogen adsorption and thermo-gravimetric analysis (TGA) were used to verify the successful synthesis of HMIPs...
October 5, 2016: Journal of Chromatography. A
Tingting Ma, Xiangyu Sun, Jinmei Zhao, Yilin You, Yushan Lei, Guitian Gao, Jicheng Zhan
The nutritional quality and antioxidant capacity of China domestic kiwifruit and imported kiwifruit with different prices and the relationships of retail price among cultivars, nutritional qualities and flesh color were investigated. Results showed that cultivar was the main factor influencing nutritional quality, though the product region could also affect the cultivar characteristics to some extent. Additionally, nutritional quality and antioxidant capacity of kiwifruit had no relationship to the product region...
March 1, 2017: Food Chemistry
Zhenpeng Gao, Zhifang Yu, Tianli Yue, Siew Young Quek
BACKGROUND: Separation of polyphenols from kiwifruit juice is essential to enhance sensory properties and to prevent browning reaction in juice during processing and storage. RESULTS: This research studied the dynamic adsorption and desorption of polyphenols in kiwifruit juice using AB-8 resin. The model obtained could be successfully applied to predict the experimental results of dynamic adsorption capacity (DAC) and dynamic desorption quantity (DDQ). The results showed that dynamic adsorption of polyphenols could be optimised in juice concentration of 19 °Brix, feed flow-rate of 1...
October 4, 2016: Journal of the Science of Food and Agriculture
Kate L Brookie, Louise A Mainvil, Anitra C Carr, Margreet C M Vissers, Tamlin S Conner
OBJECTIVES: To develop and test the effectiveness of a mobile-phone based ecological momentary intervention (EMI) to increase fruit and vegetable (FV) consumption in low-consuming young adults. METHODS: A two-week randomised controlled trial of low-FV consuming young adults ages 18-25 years (n = 171) compared three conditions: ecological momentary intervention (EMI), fruit and vegetable intervention (FVI), and a diet-as-usual control (ANZCTRN12615000183583). Participants in the EMI condition were sent two targeted text messages a day for 13 days and were asked to increase daily FV consumption to at least five servings...
September 15, 2016: Appetite
Marie-Pierre St-Onge, Anja Mikic, Cara E Pietrolungo
There is much emerging information surrounding the impact of sleep duration and quality on food choice and consumption in both children and adults. However, less attention has been paid to the effects of dietary patterns and specific foods on nighttime sleep. Early studies have shown that certain dietary patterns may affect not only daytime alertness but also nighttime sleep. In this review, we surveyed the literature to describe the role of food consumption on sleep. Research has focused on the effects of mixed meal patterns, such as high-carbohydrate plus low-fat or low-carbohydrate diets, over the short term on sleep...
September 2016: Advances in Nutrition
Qingzhen Yang, Feng Wang, Jingping Rao
We investigated the effects of different concentrations (0, 1, 2 and 4 mM) of putrescine on chilling injury, fruit quality, ethylene production rate, fatty acid composition and the antioxidant system of cold-stored kiwifruit (Actinidia chinensis Planch. var. chinensis 'Hongyang'). We achieved a significant decrease in ethylene production, maintained fruit quality and alleviated chilling injury during storage via treatment with 2 mM putrescine. Furthermore, putrescine treatment inhibited increases in superoxide anion production rate and H2O2 concentration, while maintaining higher membrane lipid unsaturation as well as increased activities of superoxide dismutase and catalase...
2016: PloS One
Wei Tang, Yi Zheng, Jing Dong, Jia Yu, Junyang Yue, Fangfang Liu, Xiuhong Guo, Shengxiong Huang, Michael Wisniewski, Jiaqi Sun, Xiangli Niu, Jian Ding, Jia Liu, Zhangjun Fei, Yongsheng Liu
Genomic and transcriptomic data on kiwifruit (Actinidia chinensis) in public databases are very limited despite its nutritional and economic value. Previously, we have constructed and sequenced nine fruit RNA-Seq libraries of A. chinensis "Hongyang" at immature, mature, and postharvest ripening stages of fruit development, and generated over 66.2 million paired-end and 24.4 million single-end reads. From this dataset, here we have identified 7051 long noncoding RNAs (lncRNAs), 29,327 alternative splicing (AS) events and 2980 novel protein-coding genes that were not annotated in the draft genome of "Hongyang...
2016: Frontiers in Plant Science
Catriona J MacLeod, Peter Green, Daniel M Tompkins, Jayson Benge, Henrik Moller
Environmental monitoring is increasingly used to assess spatial and temporal trends in agricultural sustainability, and test the effectiveness of farm management policies. However, detecting changes in environmental variables is often technically and logistically challenging. To demonstrate how survey effort for environmental monitoring can be optimised, we applied the new statistical power analysis R package simr to pilot survey data. Specifically, we identified the amount of survey effort required to have an 80% chance of detecting specified trends (-1 to -4% pa) in 13 environmental variables on New Zealand kiwifruit orchards within an 11-year period...
December 1, 2016: Journal of Environmental Management
Yu-Rim Song, Min-Seon Choi, Geun-Won Choi, Il-Kwon Park, Chang-Sik Oh
Pseudomonas syringae pv. actinidiae (Psa) causes bacterial canker disease in kiwifruit. Antibacterial activity of plant essential oils (PEOs) originating from 49 plant species were tested against Psa by a vapor diffusion and a liquid culture assays. The five PEOs from Pimenta racemosa, P. dioica, Melaleuca linariifolia, M. cajuputii, and Cinnamomum cassia efficiently inhibited Psa growth by either assays. Among their major components, estragole, eugenol, and methyl eugenol showed significant antibacterial activity by only the liquid culture assay, while cinnamaldehyde exhibited antibacterial activity by both assays...
August 2016: Plant Pathology Journal
Yong Seo Park, Martin Polovka, Kyung-Sik Ham Ham, Yang-Kyun Park, Suchada Vearasilp, Jacek Namieśnik, Fernando Toledo, Patricia Arancibia-Avila, Shela Gorinstein
Organic, semiorganic, and conventional "Hayward" kiwifruits, treated with ethylene for 24 h and stored during 10 days, were assessed by UV spectrometry, fluorometry, and chemometrical analysis for changes in selected characteristics of quality (firmness, dry matter and soluble solid contents, pH, and acidity) and bioactivity (concentration of polyphenols via Folin-Ciocalteu and p-hydroxybenzoic acid assays). All of the monitored qualitative parameters and characteristics related to bioactivity were affected either by cultivation practices or by ethylene treatment and storage...
September 2016: Journal of AOAC International
Chiu-Lan Hsieh, Shang-Ming Huang, Li-I Chen, Chien-Mei Yu, Cheng-Hsin Wong, Robert Y Peng
Seven kinds of indigenous fruits and five imported fruits were compared for their "health quality." Methods including the calorific, antioxidant, and ion ratios were carried out. Results indicated the order of content (in mg/100g) was: Ca(2+) , Murcott orange (218.2) > Kiwifruit (200.0) > pineapple (138.5) > Golden kiwi (117.6); Mg(2+) , Pitaya (192.2), banana (88.0), Kiwifruit (63.4), and Golden kiwi (58.4); Zn(2+) , Pitaya (19.53) > pear (10.8) > Kiwifruit (6.09) > Irwin mango (4.58). Cu(2+) , Kiwifruit (0...
August 2016: Journal of Food Science
Qian Sun, Bin Zhang, Qiao-Juan Yan, Zheng-Qiang Jiang
In this study, a comparative analysis on the distribution of protease activities among 90 plant resources, including fruits and vegetables, has been performed. Protease activities of plant extracts were assayed at different pH values (pH 3.0, pH 7.5 and pH 10.5) using casein as a substrate. Ten fruits and thirteen vegetables show protease activities above 10U/g. Pineapple, fig and papaya, which are used for commercial protease production, exhibited high protease activities. Additionally, high protease activities were detected in kiwifruit (28...
December 15, 2016: Food Chemistry
Hong Shen, Xinhua He, Yiqing Liu, Yi Chen, Jianming Tang, Tao Guo
Limited information is available if plant growth promoting bacteria (PGPB) can promote the growth of fruit crops through improvements in soil fertility. This study aimed to evaluate the capacity of PGPB, identified by phenotypic and 16S rRNA sequencing from a vegetable purple soil in Chongqing, China, to increase soil nitrogen (N), phosphorus (P), and potassium (K) availability and growth of kiwifruit (Actinidia chinensis). In doing so, three out of 17 bacterial isolates with a high capacity of N2-fixation (Bacillus amyloliquefaciens, XD-N-3), P-solubilization (B...
2016: Frontiers in Microbiology
Longsheng Fu, Shipeng Sun, Rui Li, Shaojin Wang
This study aims to demonstrate the feasibility for classifying kiwifruit into shape grades by adding a single camera to current Chinese sorting lines equipped with weight sensors. Image processing methods are employed to calculate fruit length, maximum diameter of the equatorial section, and projected area. A stepwise multiple linear regression method is applied to select significant variables for predicting minimum diameter of the equatorial section and volume and to establish corresponding estimation models...
2016: Sensors
Alessandro Bonavita, Vitale Carratore, Maria Antonietta Ciardiello, Alfonso Giovane, Luigi Servillo, Rossana D'Avino
Pectin methylesterase is a pectin modifying enzyme that plays a key role in plant physiology. It is also an important quality-related enzyme in plant-based food products. The pectin methylesterase inhibitor (PMEI) from kiwifruit inhibits this enzyme activity and is widely used as an efficient tool for research purposes and also recommended in the context of fruit and vegetable processing. Using several methodologies of protein biochemistry, including circular dichroism and fluorescence spectroscopy, chemical modifications, direct protein-sequencing, enzyme activity, and bioinformatics analysis of the crystal structure, this study demonstrates that conformational changes occur in kiwi PMEI by the pH rising over 6...
July 27, 2016: Journal of Agricultural and Food Chemistry
Mohammad Hossein Nadian, Mohammad Hossein Abbaspour-Fard, Hassan Sadrnia, Mahmood Reza Golzarian, Mohammad Tabasizadeh
BACKGROUND: Pre-treating is a crucial stage of drying process. The best pretreatment for hot air drying of kiwifruit was investigated using a computer vision system (CVS), for online monitoring of drying attributes including drying time, color changes and shrinkage, as decision criteria and using clustering method. Slices were dried at 70 °C with hot water blanching (HWB), steam blanching (SB), infrared blanching (IR) and acid ascorbic 1% w/w (AA) as pretreatments each with three durations of 5, 10 and 15 min...
June 20, 2016: Journal of the Science of Food and Agriculture
Giovanny Covarrubias-Pazaran, Luis Diaz-Garcia, Brandon Schlautman, Joseph Deutsch, Walter Salazar, Miguel Hernandez-Ochoa, Edward Grygleski, Shawn Steffan, Massimo Iorizzo, James Polashock, Nicholi Vorsa, Juan Zalapa
BACKGROUND: The application of genotyping by sequencing (GBS) approaches, combined with data imputation methodologies, is narrowing the genetic knowledge gap between major and understudied, minor crops. GBS is an excellent tool to characterize the genomic structure of recently domesticated (~200 years) and understudied species, such as cranberry (Vaccinium macrocarpon Ait.), by generating large numbers of markers for genomic studies such as genetic mapping. RESULTS: We identified 10842 potentially mappable single nucleotide polymorphisms (SNPs) in a cranberry pseudo-testcross population wherein 5477 SNPs and 211 short sequence repeats (SSRs) were used to construct a high density linkage map in cranberry of which a total of 4849 markers were mapped...
2016: BMC Genomics
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