keyword
MENU ▼
Read by QxMD icon Read
search

Potato anthocyanins

keyword
https://www.readbyqxmd.com/read/27879622/ultrasound-assisted-extraction-centrifugation-and-ultrafiltration-multistage-process-for-polyphenol-recovery-from-purple-sweet-potatoes
#1
Zhenzhou Zhu, Tian Jiang, Jingren He, Francisco J Barba, Giancarlo Cravotto, Mohamed Koubaa
This work provides an evaluation of an ultrasound-assisted, combined extraction, centrifugation and ultrafiltration process for the optimal recovery of polyphenols. A purple sweet potato (PSP) extract has been obtained using ultrasonic circulating extraction equipment at a power of 840 W, a frequency of 59 kHz and using water as solvent. Extract ultrafiltration, using polyethersulfone (PES), was carried out for the recovery of polyphenol, protein and anthocyanin. Pre-treatment, via the centrifugation of purple sweet potato extract at 2500 rpm over 6 min, led to better polyphenol recovery, with satisfactory protein removal (reused for future purposes), than PSP extract filtration without centrifugation...
November 20, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27719937/changes-in-phenolic-content-of-commercial-potato-varieties-through-industrial-processing-and-fresh-preparation
#2
Amber Furrer, Dennis P Cladis, Anne Kurilich, Ramesh Manoharan, Mario G Ferruzzi
Reported content and process stability of phenolics in potato products is inconsistent. Changes in phenolic content of select varieties through fresh and industrial preparation/reconstitution were assessed. Total chlorogenic acids (CQAs) ranged from 43 to 953mg/100g dw and were more concentrated in pigmented compared to white/yellow-fleshed potatoes. Anthocyanin (ANC) content ranged from 18.6 to 22.9mg/100g dw and were mainly present in the flesh of pigmented potatoes. Retention of phenolics through commercial processing ranged from 49 to 85% for pigmented varieties and 32-55% for white/yellow...
March 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27719887/intelligent-ph-indicator-film-composed-of-agar-potato-starch-and-anthocyanin-extracts-from-purple-sweet-potato
#3
Inyoung Choi, Jun Young Lee, Monique Lacroix, Jaejoon Han
A new colorimetric pH indicator film was developed using agar, potato starch, and natural dyes extracted from purple sweet potato, Ipomoea batatas. Both agar and potato starch are solid matrices used to immobilize natural dyes, anthocyanins. The ultraviolet-visible (UV-vis) spectrum of anthocyanin extract solutions and agar/potato starch films with anthocyanins showed color variations to different pH values (pH 2.0-10.0). Fourier transform infrared (FT-IR) and UV-vis region spectra showed compatibility between agar, starch, and anthocyanin extracts...
March 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27686628/synthesis-of-maltodextrin-grafted-cinnamic-acid-and-evaluation-on-its-ability-to-stabilize-anthocyanins-via-microencapsulation
#4
Yi Ma, Chang-Jun Hou, Hui-Xiang Wu, Huan-Bao Fa, Jun-Jie Li, Cai-Hong Shen, Dan Li, Dan-Qun Huo
In this work, maltodextrin-grafted-cinnamic acid (MD-g-CA) was synthesised and used as wall material to improve the stability of purple sweet potato anthocyanins (PSPa) via microencapsualtion. MD-g-CA was prepared through esterification in a two-step convenient synthesis procedure and characterised using infra-red (IR) spectroscopy. The IR data indicated the typical ester carbonyl stretching at around 1721 cm(-1). Moreover, MD-g-CA could give about 40% inhibition of DPPH radical and present excellent UV-absorption, which were notably better than that of native MD...
September 2016: Journal of Microencapsulation
https://www.readbyqxmd.com/read/27562012/gluten-free-bread-with-an-addition-of-freeze-dried-red-and-purple-potatoes-as-a-source-of-phenolic-compounds-in-gluten-free-diet
#5
Dorota Gumul, Rafał Ziobro, Eva Ivanišová, Anna Korus, Július Árvay, Tomáš Tóth
The basis for gluten-free diet is often gluten-free bread, which is usually characterized by a low-nutritional value, and lacks any pro-health properties. Only after an introduction of gluten-free raw materials, containing high level of bioactive compounds it would be possible to obtain the product with a pro-health potential. The aim of the study was to analyze the content of bioactive compounds (total phenolic content, phenolic acids, flavonoids, flavonols, anthocyanins and carotenoids) in gluten-free bread prepared with 5% addition of freeze-dried red and purple potatoes as well as to assess their antioxidant potential...
August 25, 2016: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/27542491/hplc-dad-esi-ms-2-analytical-profile-of-extracts-obtained-from-purple-sweet-potato-after-green-ultrasound-assisted-extraction
#6
Zhenzhou Zhu, Qingyan Guan, Mohamed Koubaa, Francisco J Barba, Shahin Roohinejad, Giancarlo Cravotto, Xinsun Yang, Shuyi Li, Jingren He
Ultrasound pre-treatment (UAE) was applied to assist the extraction of valuable compounds (polyphenols (especially anthocyanins), and proteins) from purple sweet potato (PSP). Under optimum conditions (ultrasound time (40min); supplementary hot extraction (80°C) up to 120min; pH: 2.5; ethanol concentration: 58%), the highest concentrations of polyphenols (3.877mg/g), anthocyanins (0.293mg/g), and proteins (0.753mg/g) were found, with minimal specific energy consumption (8406J/mg). Moreover, anthocyanin and non-anthocyanin polyphenols in PSP extract from optimized extraction temperature were identified using HPLC-DAD-ESI-MS(2)...
January 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27530473/double-blind-placebo-controlled-pilot-trial-of-anthocyanin-rich-purple-sweet-potato-beverage-on-serum-hepatic-biomarker-levels-in-healthy-caucasians-with-borderline-hepatitis
#7
T Oki, M Kano, F Ishikawa, K Goto, O Watanabe, I Suda
The objective is to evaluate the efficacy of anthocyanin-rich purple-fleshed sweet potato (PSP) beverage on the serum levels of gamma-glutamyl transferase (GGT), aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in healthy Caucasians with borderline hepatitis. Forty healthy Caucasians (41-69 years) consumed three bottles of the PSP beverage (177 mg anthocyanins per 125-ml bottle) or placebo (1.3 mg) per day for 8 weeks. Thirty-nine subjects completed the study and two subjects were excluded from statistical analysis...
August 17, 2016: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27508114/effect-of-consuming-a-purple-fleshed-sweet-potato-beverage-on-health-related-biomarkers-and-safety-parameters-in-caucasian-subjects-with-elevated-levels-of-blood-pressure-and-liver-function-biomarkers-a-4-week-open-label-non-comparative-trial
#8
Tomoyuki Oki, Mitsuyoshi Kano, Osamu Watanabe, Kazuhisa Goto, Esther Boelsma, Fumiyasu Ishikawa, Ikuo Suda
An open-label study with one treatment arm was conducted to investigate changes in health-related biomarkers (blood pressure and liver enzyme activity) and the safety of 4 weeks of consuming a purple-fleshed sweet potato beverage in Caucasian subjects. Twenty healthy adults, 18-70 years of age, with a body mass index >25 kg/m(2), elevated blood pressure and elevated levels of liver function biomarkers consumed two cartons of purple-fleshed sweet potato beverage (125 ml, including 117 mg anthocyanin per carton) daily for 4 weeks...
2016: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/27413208/effect-of-drying-conditions-on-properties-pigments-and-antioxidant-activity-retentions-of-pretreated-orange-and-purple-fleshed-sweet-potato-flours
#9
Khanitta Ruttarattanamongkol, Sasivimon Chittrakorn, Monthana Weerawatanakorn, Narong Dangpium
Pigmented sweet potatoes (SPs) are outstanding sources of anthocyanin, β-carotene and other color-related phytonutrients. However, fresh SP roots are highly perishable and difficult to store. To reduce losses and extend their uses, fresh SP could be converted into flour. SP cultivars with deep purple (Phichit 65-3) and orange-fleshed (T101) colors newly developed in Thailand were studied. The influence of drying methods on physico-chemical properties, anthocyanin, β-carotene and antioxidant activity retentions of purple and orange-fleshed SP flours (SPFs) was investigated...
April 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27390727/antioxidant-contents-and-antioxidant-activities-of-white-and-colored-potatoes-solanum-tuberosum-l
#10
Sang Hoon Lee, Seung Hee Oh, In Guk Hwang, Hyun Young Kim, Koan Sik Woo, Shun Hee Woo, Hong Sig Kim, Junsoo Lee, Heon Sang Jeong
This study was performed to evaluate and compare the antioxidant substance content and antioxidant activities of white (Superior) and colored (Hongyoung, Jayoung, Jasim, Seohong, and Jaseo) potatoes. The potatoes were extracted with 80% ethanol and were evaluated for the total polyphenol, flavonoid, and anthocyanin contents and for 1,1-diphenyl- 2-picrylhydrazyl (DPPH)/2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical scavenging activity, reducing power, and ferrous metal ion chelating effect...
June 2016: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/27329928/purple-sweet-potato-anthocyanin-attenuates-fat-induced-mortality-in-drosophila-melanogaster
#11
Lijun Wang, Yuk Man Li, Lin Lei, Yuwei Liu, Xiaobo Wang, Ka Ying Ma, Chengnan Zhang, Hanyue Zhu, Yimin Zhao, Zhen-Yu Chen
A high fat diet induces the accumulation of lipid hydroperoxides (LPO), accelerates the ageing process and causes a greater mortality in Drosophila melanogaster. Purple sweet potato is rich in antioxidant anthocyanin. The purpose of the present study was to examine if supplementation of purple sweet potato anthocyanin (PSPA) could reduce the mortality of fruit flies fed a high-fat diet. Results showed that the mean lifespan of fruit flies was shortened from 56 to 35days in a dose-dependent manner when lard in the diet increased from 0% to 20%...
September 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/27283645/improving-the-screening-of-potato-breeding-lines-for-specific-nutritional-traits-using-portable-mid-infrared-spectroscopy-and-multivariate-analysis
#12
Huseyin Ayvaz, Adnan Bozdogan, M Monica Giusti, Mustafa Mortas, Rene Gomez, Luis E Rodriguez-Saona
Efficient selection of potato varieties with enhanced nutritional quality requires simple, accurate and cost effective assays to obtain tuber chemical composition information. In this study, 75 Andean native potato samples from 7 Solanum species with different colors were characterized and quantified for their anthocyanin, phenolics and sugar content using traditional reference methods. IR (infrared) spectra of potato extracts were collected using a portable infrared system and partial least squares regression (PLSR) calibration models were developed...
November 15, 2016: Food Chemistry
https://www.readbyqxmd.com/read/27234523/plant-growth-regulators-alter-phytochemical-constituents-and-pharmaceutical-quality-in-sweet-potato-ipomoea-batatas-l
#13
Ali Ghasemzadeh, Daryush Talei, Hawa Z E Jaafar, Abdul Shukor Juraimi, Mahmud Tengku Muda Mohamed, Adam Puteh, Mohd Ridzwan A Halim
BACKGROUND: Sweet potato (Ipomoea batatas L.) is one of the most important consumed crops in many parts of the world because of its economic importance and content of health-promoting phytochemicals. METHODS: With the sweet potato (Ipomoea batatas L.) as our model, we investigated the exogenous effects of three plant-growth regulators methyl jasmonate (MeJA), salicylic acid (SA), and abscisic acid (ABA) on major phytochemicals in relation to phenylalanine ammonia lyase (PAL) activity...
2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27163964/comparison-of-the-postprandial-effects-of-purple-fleshed-and-yellow-fleshed-potatoes-in-healthy-males-with-chemical-characterization-of-the-potato-meals
#14
Kaisa M Linderborg, Johanna E Salo, Marika Kalpio, Anssi L Vuorinen, Maaria Kortesniemi, Mikko Griinari, Matti Viitanen, Baoru Yang, Heikki Kallio
The aim of the current study was to characterize the anthocyanin content and composition of a purple potato landrace cultivar (Solanum tuberosum 'Synkeä Sakari') and to compare the postprandial effects of purple-fleshed potatoes, yellow-fleshed potatoes and bilberries in potato starch on postprandial glycemia and insulinemia in healthy males. The purple potato meal caused smaller insulinemia than the yellow potato meal (iAUC 120 min 1347 and 2226, respectively, p = 0.012 and iAUC 240 min 1448 and 2403, p = 0...
August 2015: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/26996980/sweet-potato-nac-transcription-factor-ibnac1-upregulates-sporamin-gene-expression-by-binding-the-swre-motif-against-mechanical-wounding-and-herbivore-attack
#15
Shi-Peng Chen, I Winnie Lin, Xuanyang Chen, Yin-Hao Huang, Shiao-Chi Chang, Hui-Shan Lo, Hseuh-Han Lu, Kai-Wun Yeh
Sporamin is a tuberous storage protein with trypsin inhibitory activity in sweet potato (Ipomoea batatas Lam.), which accounts for 85% of the soluble protein in tubers. It is constitutively expressed in tuberous roots but is expressed in leaves only after wounding. Thus far, its wound-inducible signal transduction mechanisms remain unclear. In the present work, a 53-bp DNA region, sporamin wound-response cis-element (SWRE), was identified in the sporamin promoter and was determined to be responsible for the wounding response...
May 2016: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/26975278/the-modulatory-effect-of-anthocyanins-from-purple-sweet-potato-on-human-intestinal-microbiota-in-vitro
#16
Xin Zhang, Yang Yang, Zufang Wu, Peifang Weng
In order to investigate the modulatory effect of purple sweet potato anthocyanins (PSPAs) on human intestinal microbiota, PSPAs were prepared by column chromatography and their influence on intestinal microbiota was analyzed by monitoring the bacterial populations and analyzing short-chain fatty acid (SCFA) concentrations at different time points. The numbers (log10 cell/mL) of Bifidobacterium and Lactobacillus/Enterococcus spp., Bacteroides-Prevotella, Clostridium histolyticum, and total bacteria after 24 h of culture in anaerobic fermentation broth containing PSPAs were 8...
March 30, 2016: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/26957144/proteomic-approach-reveals-that-starch-degradation-contributes-to-anthocyanin-accumulation-in-tuberous-root-of-purple-sweet-potato
#17
Shaoqing Wang, Dezhuo Pan, Xiaojie Lv, Xiaomin Song, Zhimin Qiu, Chunmei Huang, Ronghui Huang, Wei Chen
UNLABELLED: A comparative proteomic approach was carried out to investigate anthocyanin biosynthesis in the tuberous roots of yellow sweet potato (YSP) and purple sweet potato (PSP) cultivars. More than 800 proteins were reproducibly detected through two-dimensional electrophoresis (2-DE), of which 50 proteins with 39 more and 11 less accumulated in PSP were identified through matrix-assisted laser desorption ionization-time of flight/time of flight mass spectrometry (MALDI-TOF/TOF-MS)...
June 30, 2016: Journal of Proteomics
https://www.readbyqxmd.com/read/26884602/functional-diversification-of-the-potato-r2r3-myb-anthocyanin-activators-an1-myba1-and-myb113-and-their-interaction-with-basic-helix-loop-helix-cofactors
#18
Yuhui Liu, Kui Lin-Wang, Richard V Espley, Li Wang, Hongyu Yang, Bin Yu, Andrew Dare, Erika Varkonyi-Gasic, Jing Wang, Junlian Zhang, Di Wang, Andrew C Allan
In potato (Solanum tuberosum L.), R2R3 MYBs are involved in the regulation of anthocyanin biosynthesis. We examined sequences of these MYBs in cultivated potatoes, which are more complex than diploid potato due to ploidy and heterozygosity. We found amino acid variants in the C-terminus of the MYB StAN1, termed R0, R1, and R3, due to the presence of a repeated 10-amino acid motif. These variant MYBs showed some expression in both white and pigmented tubers. We found several new alleles or gene family members of R2R3 MYBs,StMYBA1 and StMYB113, which were also expressed in white potato tubers...
April 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/26733692/network-analysis-of-the-metabolome-and-transcriptome-reveals-novel-regulation-of-potato-pigmentation
#19
Kyoungwon Cho, Kwang-Soo Cho, Hwang-Bae Sohn, In Jin Ha, Su-Young Hong, Hyerim Lee, Young-Mi Kim, Myung Hee Nam
To gain insights into the regulatory networks related to anthocyanin biosynthesis and identify key regulatory genes, we performed an integrated analysis of the transcriptome and metabolome in sprouts germinated from three colored potato cultivars: light-red Hongyoung, dark-purple Jayoung, and white Atlantic. We investigated transcriptional and metabolic changes using statistical analyses and gene-metabolite correlation networks. Transcript and metabolite profiles were generated through high-throughput RNA-sequencing data analysis and ultraperformance liquid chromatography quadrupole time-of-flight tandem mass spectrometry, respectively...
March 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/26727353/altered-phenylpropanoid-metabolism-in-the-maize-lc-expressed-sweet-potato-ipomoea-batatas-affects-storage-root-development
#20
Hongxia Wang, Jun Yang, Min Zhang, Weijuan Fan, Nurit Firon, Sitakanta Pattanaik, Ling Yuan, Peng Zhang
There is no direct evidence of the effect of lignin metabolism on early storage root development in sweet potato. In this study, we found that heterologous expression of the maize leaf color (Lc) gene in sweet potato increased anthocyanin pigment accumulation in the whole plant and resulted in reduced size with an increased length/width ratio, low yield and less starch content in the early storage roots. RT-PCR analysis revealed dramatic up-regulation of the genes involved in the lignin biosynthesis pathway in developing storage roots, leading to greater lignin content in the Lc transgenic lines, compared to the wild type...
2016: Scientific Reports
keyword
keyword
2378
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"