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https://www.readbyqxmd.com/read/28317781/stability-of-%C3%AE-carotene-during-baking-of-orange-fleshed-sweet-potato-wheat-composite-bread-and-estimated-contribution-to-vitamin-a-requirements
#1
Madjaliwa Nzamwita, Kwaku Gyebi Duodu, Amanda Minnaar
Orange-fleshed sweet potato (OFSP) is known to be a rich source of β-carotene, a precursor of vitamin A and a potential tool for fighting vitamin A deficiency (VAD) in developing countries. OFSP flour was incorporated into wheat flour at 10, 20 and 30% (w/w) substitution levels. The stability of β-carotene during baking and the contribution of OFSP-wheat composite breads to vitamin A requirements were evaluated. The retention of all-trans-β-carotene in breads containing 10, 20 and 30% OFSP flour was 62.7, 71...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28298685/rapid-quantitative-determination-of-maltose-and-total-sugars-in-sweet-potato-ipomoea-batatas-l-lam-varieties-using-hptlc
#2
Vincent Lebot
When a raw sweet potato root is analysed, only sucrose, glucose and fructose are present but during cooking, starch is hydrolysed into maltose giving the sweet flavour to cooked roots. This study aimed at developing an HPTLC protocol for the rapid quantitative determination of maltose and total sugars in four commercial varieties and to compare them to 243 hybrids grouped by flesh colour (white, orange, purple). In commercial varieties, mean maltose content varied from 10.26 to 15.60% and total sugars from 17...
March 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28296348/consumption-of-a-diet-rich-in-brassica-vegetables-is-associated-with-a-reduced-abundance-of-sulphate-reducing-bacteria-a-randomised-crossover-study
#3
Lee Kellingray, Henri S Tapp, Shikha Saha, Joanne F Doleman, Arjan Narbad, Richard F Mithen
SCOPE: We examined whether a Brassica-rich diet was associated with an increase in the relative abundance of intestinal lactobacilli and sulphate-reducing bacteria (SRB), or alteration to the composition of the gut microbiota, in healthy adults. METHODS AND RESULTS: A randomised crossover study was performed with ten healthy adults who were fed a high- and a low-Brassica diet for 2-week periods, with a 2-week washout phase separating the diets. The high-Brassica diet consisted of six 84 g portions of broccoli, six 84 g portions of cauliflower, and six 300 g portions of a broccoli and sweet potato soup...
March 10, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28293252/a-root-preferential-dfr-like-gene-encoding-dihydrokaempferol-reductase-involved-in-anthocyanin-biosynthesis-of-purple-fleshed-sweet-potato
#4
Xiaoqiang Liu, Min Xiang, Yufang Fan, Chunxian Yang, Lingjiang Zeng, Qitang Zhang, Min Chen, Zhihua Liao
Purple-fleshed sweet potato is good for health due to rich anthocyanins in tubers. Although the anthocyanin biosynthetic pathway is well understood in up-ground organs of plants, the knowledge on anthocyanin biosynthesis in underground tubers is limited. In the present study, we isolated and functionally characterized a root-preferential gene encoding dihydrokaempferol reductase (IbDHKR) from purple-fleshed sweet potato. IbDHKR showed highly similarity with the reported dihydroflavonol reductases in other plant species at the sequence levels and the NADPH-binding motif and the substrate-binding domain were also found in IbDHKR...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28288284/sweet-potato-ipomoea-batatas-attenuates-diet-induced-aortic-stiffening-independent-of-changes-in-body-composition
#5
Tyler Garner, An Ouyang, Adam J Berrones, Marilyn S Campbell, Bing Du, Bradley S Fleenor
We hypothesized a sweet potato intervention would prevent high fat diet-induced aortic stiffness, which would be associated with decreased arterial oxidative stress and increased mitochondrial uncoupling. Young (8-week old) C57BL/6J mice were randomly divided into 4 groups: low fat (LF, 10% fat), high fat (HF, 60% fat), low fat sweet potato (LFSP, 10% fat containing 260.3 ug/kcal SP), or high fat sweet potato diet (HFSP, 60% fat containing 260.3 ug/kcal SP) for 16 weeks. Compared to LF and LFSP, HF and HFSP fed mice had increased body mass and percent fat mass with lower percent lean mass (all, P<0...
March 13, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28264479/phylogenetic-relationships-among-whiteflies-in-the-bemisia-tabaci-gennadius-species-complex-from-major-cassava-growing-areas-in-kenya
#6
Duke M Manani, Elijah M Ateka, Steven R G Nyanjom, Laura M Boykin
Whiteflies, Bemisia tabaci (Gennadius) are major insect pests that affect many crops such as cassava, tomato, beans, cotton, cucurbits, potato, sweet potato, and ornamental crops. Bemisia tabaci transmits viral diseases, namely cassava mosaic and cassava brown streak diseases, which are the main constraints to cassava production, causing huge losses to many small-scale farmers. The aim of this work was to determine the phylogenetic relationships among Bemisia tabaci species in major cassava growing areas of Kenya...
February 28, 2017: Insects
https://www.readbyqxmd.com/read/28261250/the-plasma-membrane-localized-sucrose-transporter-ibsweet10-contributes-to-the-resistance-of-sweet-potato-to-fusarium-oxysporum
#7
Yan Li, Yannan Wang, Huan Zhang, Qian Zhang, Hong Zhai, Qingchang Liu, Shaozhen He
SWEET (Sugars Will Eventually be Exported Transporter) proteins, a novel family of sugar transporters, mediate the diffusion of sugars across cell membranes and acts as key players in sucrose phloem loading. Manipulation of SWEET genes in plants leads to various effects on resistance to biotic and abiotic stresses due to disruption of sugar efflux and changes in sugar distribution. In this study, a member of the SWEET gene family, IbSWEET10, was cloned from the sweet potato line ND98. mRNA expression analysis in sweet potato and promoter β-Glucuronidase analysis in Arabidopsis showed that IbSWEET10 is highly expressed in leaves, especially in vascular tissue...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28253321/temperature-effects-on-development-and-fecundity-of-brachmia-macroscopa-lepidoptera-gelechiidae
#8
Li Ma, Xing Wang, Yan Liu, Ming-Zhu Su, Guo-Hua Huang
The current study investigated the impacts of temperature on the development and reproductivity of the sweet potato leaf folder, Brachmia macroscopa (Lepidoptera: Gelechiidae), in sweet potato leaves under laboratory conditions. We determined developmental time of B. macroscopa larval, pupal, and pre-adult stage at different temperatures. Male and female longevity, male and female lifespan, mortality of immature stages, oviposition period of B. macroscopa were also investigated under six constant temperatures (21°C, 24°C, 27°C, 30°C, 33°C, 36°C), based on age-stage, two-sex life tables...
2017: PloS One
https://www.readbyqxmd.com/read/28231159/comparison-of-the-proximate-composition-total-carotenoids-and-total-polyphenol-content-of-nine-orange-fleshed-sweet-potato-varieties-grown-in-bangladesh
#9
Mohammad Khairul Alam, Ziaul Hasan Rana, Sheikh Nazrul Islam
In an attempt to develop the food composition table for Bangladesh, the nutritional composition of nine varieties of orange-fleshed sweet potato was analyzed together with total carotenoids (TCC) and total polyphenol content (TPC). Each variety showed significant variation in different nutrient contents. The quantification of the TCC and TPC was done by spectrophotometric measurement, and the proximate composition was done by the AOAC method. The obtained results showed that total polyphenol content varied from 94...
September 14, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28224473/relationship-between-major-dietary-patterns-and-sarcopenia-among-menopausal-women
#10
Reza Mohseni, Sima Aliakbar, Afsoun Abdollahi, Mir Saeed Yekaninejad, Zhila Maghbooli, Khadijeh Mirzaei
BACKGROUND AND AIM: Dietary habits have been associated with the prevalence of the sarcopenia and limited data are available in this field for menopausal women. This study focused on the relationship between dietary patterns and prevalence of the sarcopenia in menopausal women. METHODS: This cross-sectional study was done in 250 menopausal women 45 years old or older. Dietary data were collected using a food-frequency questionnaire and physical activity was assessed by International Physical Activity Questionnaire (IPAQ)...
February 21, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28187234/the-research-and-implementation-continuum-of-biofortified-sweet-potato-and-maize-in-africa
#11
Sherry A Tanumihardjo, Anna-Marie Ball, Chisela Kaliwile, Kevin V Pixley
The enhancement of sweet potato and maize with provitamin A carotenoids has been part of HarvestPlus's research continuum since the formation of the biofortification project. This review includes case studies of biofortification strategies used for sweet potato in Uganda and orange maize in Zambia. The current status of the science and release of biofortified varieties was reviewed by three scientists who were part of the HarvestPlus program for more than a decade with input from a scientist who experienced orange maize dissemination in Zambia...
February 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28187178/genome-wide-assessment-of-population-structure-and-genetic-diversity-and-development-of-a-core-germplasm-set-for-sweet-potato-based-on-specific-length-amplified-fragment-slaf-sequencing
#12
Wenjin Su, Lianjun Wang, Jian Lei, Shasha Chai, Yi Liu, Yuanyuan Yang, Xinsun Yang, Chunhai Jiao
Sweet potato, Ipomoea batatas (L.) Lam., is an important food crop that is cultivated worldwide. However, no genome-wide assessment of the genetic diversity of sweet potato has been reported to date. In the present study, the population structure and genetic diversity of 197 sweet potato accessions most of which were from China were assessed using 62,363 SNPs. A model-based structure analysis divided the accessions into three groups: group 1, group 2 and group 3. The genetic relationships among the accessions were evaluated using a phylogenetic tree, which clustered all the accessions into three major groups...
2017: PloS One
https://www.readbyqxmd.com/read/28185876/associations-between-food-consumption-patterns-and-saliva-composition-specificities-of-eating-difficulties-children
#13
Martine Morzel, Caroline Truntzer, Eric Neyraud, Hélène Brignot, Patrick Ducoroy, Géraldine Lucchi, Cécile Canlet, Ségolène Gaillard, Florian Nicod, Sophie Nicklaus, Noël Peretti, Gilles Feron
Identifying objective markers of diet would be beneficial to research fields such as nutritional epidemiology. As a preliminary study on the validity of using saliva for this purpose, and in order to explore the relationship between saliva and diet, we focused on clearly contrasted groups of children: children with eating difficulties (ED) receiving at least 50% of their energy intake through artificial nutrition vs healthy controls (C). Saliva of ED and C children was analyzed by various methods (targeted biochemical analyses, 2-D electrophoresis coupled to MS, (1)H NMR) and their diet was characterized using food frequency questionnaires, considering 148 food items grouped into 13 categories...
February 6, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28164808/emerging-food-allergens-identification-of-polyphenol-oxidase-as-an-important-allergen-in-eggplant-solanum-melongena-l
#14
Bheemanapalli N Harish Babu, Anthony Wilfred, Yeldur P Venkatesh
Although many allergens have been detected in eggplant (Solanum melongena L.), their identity have not been elucidated. The aim of this study was to investigate whether polyphenol oxidase (PPO), an important eggplant enzyme, acts as an allergen. The proteins of eggplant peel extract were separated on phenyl-Sepharose (PS), and analyzed by skin prick test (SPT), ELISA and IgE-immunoblotting; the components were analyzed for PPO activity, presence of protein-bound copper, and recognition by rabbit polyclonal anti-sweet potato PPO antiserum...
February 2017: Immunobiology
https://www.readbyqxmd.com/read/28155188/inducible-expression-of-bs2-r-gene-from-capsicum-chacoense-in-sweet-orange-citrus-sinensis-l-osbeck-confers-enhanced-resistance-to-citrus-canker-disease
#15
Lorena Noelia Sendín, Ingrid Georgina Orce, Rocío Liliana Gómez, Ramón Enrique, Carlos Froilán Grellet Bournonville, Aldo Sergio Noguera, Adrián Alberto Vojnov, María Rosa Marano, Atilio Pedro Castagnaro, María Paula Filippone
Transgenic expression of the pepper Bs2 gene confers resistance to Xanthomonas campestris pv. vesicatoria (Xcv) pathogenic strains which contain the avrBs2 avirulence gene in susceptible pepper and tomato varieties. The avrBs2 gene is highly conserved among members of the Xanthomonas genus, and the avrBs2 of Xcv shares 96% homology with the avrBs2 of Xanthomonas citri subsp. citri (Xcc), the causal agent of citrus canker disease. A previous study showed that the transient expression of pepper Bs2 in lemon leaves reduced canker formation and induced plant defence mechanisms...
February 2, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28135399/purple-sweet-potato-attenuate-weight-gain-in-high-fat-diet-induced-obese-mice
#16
Ronghui Ju, Shujuan Zheng, Hongxia Luo, Changgang Wang, Lili Duan, Yao Sheng, Changhui Zhao, Wentao Xu, Kunlun Huang
Purple sweet potato (PSP) is widely grown in Asia and considered as a healthy vegetable. The objective of the current study was to determine the anti-obesity effect of the PSP on high fat diet induced obese C57BL/6J mice. The mice were administrated with high fat diet supplemented with the sweet potato (SP) or PSP at the concentration of 15% and 30% for 12 wk, respectively. The results showed that the supplementation of SP or PSP at 30% significantly ameliorated high fat diet induced obesity and its associated risk factors, including reduction of body weight and fat accumulation, improvement of lipid profile and modulation of energy expenditure...
January 30, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28134423/tobacco-chewing-and-risk-of-gastric-cancer-a-case-control-study-in-yemen
#17
F A Al-Qadasi, S A Shah, H F Ghazi
This study aimed to assess the risk factors for gastric cancer in Yemen. A hospital-based case-control study of 70 cases and 140 controls was carried out in Sana'a city between May and October 2014. A structured questionnaire was used to collect information through direct interview. Living in rural areas, tobacco chewing and drinking untreated water were significant risk factors for gastric cancer. Frequent consumption of chicken, cheese, milk, starchy vegetables, cucumber, carrots, leeks, sweet pepper, fruit drinks, legumes and olive oil were associated significantly with decreased risk of gastric cancer...
January 23, 2017: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/28120607/anaphylaxis-to-hidden-potato-allergens-in-a-peach-and-egg-allergic-boy
#18
M F Martín-Muñoz, A Diaz-Perales, J Cannabal, S Quirce
More than 170 foods have been identified as being potentially allergenic. However, a minority of these foods cause the majority of reactions. Sweets are frequently implicated in allergic reactions in children with cow's milk, egg, nuts or fruits allergy, and they are the most relevant foods investigated as responsible allergens. We report an anaphylactic reaction to candies in an egg and peach allergic boy. We performed a study to identify responsible allergens for the reaction. We investigated hidden egg and peach allergens in the candies, but they were not found...
January 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28115751/phenolics-extraction-from-sweet-potato-peels-modelling-and-optimization-by-response-surface-modelling-and-artificial-neural-network
#19
Ana Anastácio, Rúben Silva, Isabel S Carvalho
Sweet potato peels (SPP) are a major waste generated during root processing and currently have little commercial value. Phenolics with free radical scavenging activity from SPP may represent a possible added-value product for the food industry. The aqueous extraction of phenolics from SPP was studied using a Central Composite Design with solvent to solid ratio (30-60 mL g(-1)), time (30-90 min) and temperature (25-75 °C) as independent variables. The comparison of response surface methodology (RSM) and artificial neural network (ANN) analysis on extraction modelling and optimising was performed...
December 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28069189/ultrasound-treated-potato-peel-and-sweet-lime-pomace-based-biopolymer-film-development
#20
Purba Prasad Borah, Pulak Das, Laxmikant S Badwaik
Treatment and management of food processing waste is a major challenge for food industry. Potato processing industry generates tremendous amount of peel and consider it as zero valued waste. Again, pomace generated after juice extraction from sweet lime pulp is considered as waste and not properly utilized. Whereas these waste could be utilized for the development of biodegradable packaging film to overcome environmental issues. Composite films were prepared with varying proportion of potato peel powder (PP) and sweet lime pomace (SLP) in the ratio of 0:1(A), 0...
May 2017: Ultrasonics Sonochemistry
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