keyword
MENU ▼
Read by QxMD icon Read
search

Carotenoids

keyword
https://www.readbyqxmd.com/read/28106710/banana-passion-fruit-passiflora-mollissima-kunth-l-h-bailey-microencapsulation-phytochemical-composition-and-antioxidant-capacity
#1
Almudena García-Ruiz, Amadeo Girones-Vilaplana, Paola León, Diego A Moreno, Carla M Stinco, Antonio J Meléndez-Martínez, Jenny Ruales
Passiflora mollissima (Kunth) L.H. Bailey is an exotic fruit native to South America, known as taxo in Ecuador. This paper characterizes its flavonoid and carotenoid composition and antioxidant capacity and evaluates the effect of the spray-drying process on its phytochemical composition and antioxidant capacity. A total of 18 flavonoid compounds, nine proanthocyanidins and nine flavan-3-ol monomers, were identified and quantified. Glycosides of (epi)-afzelechin stood out as the most abundant flavonoid. Three carotenoids were identified, with β-carotene having the highest concentration...
January 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28103395/influence-of-lipid-content-in-a-corn-oil-preparation-on-the-bioaccessibility-of-%C3%AE-carotene-a-comparison-of-low-fat-and-high-fat-samples
#2
Ziyuan Xia, David Julian McClements, Hang Xiao
Some individuals with fat maldigestion have compromised digestive systems, which causes the incomplete hydrolyzation of ingested lipids within the gastrointestinal tract (GIT). We studied the influence of high-fat (20%) and low-fat (4%) contents on the bioaccessibility of a highly hydrophobic nutraceutical (β-carotene) through a simulated GIT model consisting of mouth, stomach, and small intestine phases. The low-fat and high-fat values were chosen to simulate low-fat and high-fat diets. The triglycerides in the low-fat system were fully digested, whereas those in the high-fat system were only partially digested, thereby mimicking the digestive systems of individuals who exhibit fat maldigestion...
January 19, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28102295/bioactive-compounds-and-antioxidant-activity-of-wolfberry-infusion
#3
Yujing Sun, Japaer Rukeya, Wenyang Tao, Peilong Sun, Xingqian Ye
An infusion of the wolfberry (Lycium barbarum L.) is a traditional Asian herbal tea. This is the most commonly consumed form of dried wolfberry worldwide, yet little scientific information on wolfberry infusions is available. We investigated the effects of making infusions with hot water on the color, the content of bioactive compounds (polysaccharides, polyphenols, flavonoids and carotenoids) and the antioxidant ability of wolfberry infusions. The contents of bioactive compounds and the antioxidant activity of a wolfberry infusion increased with increased infusion temperature and time...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101967/host-related-factors-explaining-interindividual-variability-of-carotenoid-bioavailability-and-tissue-concentrations-in-humans
#4
Torsten Bohn, Charles Desmarchelier, Lars O Dragsted, Charlotte S Nielsen, Wilhelm Stahl, Ralph Rühl, Jaap Keijer, Patrick Borel
Carotenoid dietary intake and their endogenous levels have been associated with a decreased risk of several chronic diseases. There are indications that carotenoid bioavailability depends, in addition to the food matrix, on host factors. These include diseases (e.g. colitis), life-style habits (e.g. smoking), gender and age, as well as genetic variations including single nucleotide polymorphisms that govern carotenoid metabolism. These are expected to explain interindividual differences that contribute to carotenoid uptake, distribution, metabolism and excretion, and therefore possibly also their association with disease risk...
January 19, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28098452/a-perspective-on-crocus-sativus-l-saffron-constituent-corcin-a-potent-water-soluble-antioxidant-and-potential-therapy-for-alzheimer-s-disease
#5
John W Finley, Song Gao
Alzheimer's Disease (AD) is the most common form of dementia in which the death of brain cells causes memory loss and cognitive decline. Several factors are thought to play roles in the development and course of AD. Existing medical therapies only alleviate and delay cognitive symptoms. Current research has been focused on developing antibodies to remove the targets of β-amyloid (Aβ) and tau protein. This approach has achieved removal of A, however, no long term success to AD patients reported. The biological properties of saffron, the dry stigma of the plant Crocus sativus L...
January 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28097172/transcript-levels-of-phytoene-desaturase-gene-in-dunaliella-salina-teod-as-affected-by-pbs-nanoparticles-and-light-intensity
#6
Hajar Zamani, Ali Moradshahi
Phytoene synthase (Psy) and Phytoene desaturase (Pds) are the first two regulatory enzymes in the carotenoids biosynthetic pathway. The genes Psy and Pds are under transcriptional control in many photosynthetic organisms. In the present study, using quantitative real time- PCR (qRT-PCR), the effects of uncoated and gum-Arabic coated PbS nanoparticles (GA-coated PbS NPs) and light intensity on the mRNA levels of Pds were investigated. Relative to mRNA level of Pds at 100 µmol photon m-2 s-1 light intensity (control culture), 2...
September 2016: Molecular Biology Research Communications
https://www.readbyqxmd.com/read/28096780/molecular-breeding-of-a-novel-orange-brown-tomato-fruit-with-enhanced-beta-carotene-and-chlorophyll-accumulation
#7
Ranjith Kumar Manoharan, Hee-Jeong Jung, Indeok Hwang, Namhee Jeong, Kang Hee Kho, Mi-Young Chung, Ill-Sup Nou
BACKGROUND: Tomatoes provide a significant dietary source of the carotenoids, lycopene and β-carotene. During ripening, carotenoid accumulation determines the fruit colors while chlorophyll degradation. These traits have been, and continue to be, a significant focus for plant breeding efforts. Previous work has found strong evidence for a relationship between CYC-B gene expression and the orange color of fleshy fruit. Other work has identified a point mutation in SGR that impedes chlorophyll degradation and causes brown flesh color to be retained in some tomato varieties...
2017: Hereditas
https://www.readbyqxmd.com/read/28096132/innovative-techniques-for-evaluating-behavioral-nutrition-interventions
#8
REVIEW
Rachel E Scherr, Kevin D Laugero, Dan J Graham, Brian T Cunningham, Lisa Jahns, Karina R Lora, Marla Reicks, Amy R Mobley
Assessing outcomes and the impact from behavioral nutrition interventions has remained challenging because of the lack of methods available beyond traditional nutrition assessment tools and techniques. With the current high global obesity and related chronic disease rates, novel methods to evaluate the impact of behavioral nutrition-based interventions are much needed. The objective of this narrative review is to describe and review the current status of knowledge as it relates to 4 different innovative methods or tools to assess behavioral nutrition interventions...
January 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28096126/the-age-related-eye-disease-2-study-micronutrients-in-the-treatment-of-macular-degeneration
#9
REVIEW
Aruna Gorusupudi, Kelly Nelson, Paul S Bernstein
Age-related macular degeneration (AMD) is one of the leading causes of vision loss in the elderly. With an increasingly aged population worldwide, the need for the prevention of AMD is rising. Multiple studies investigating AMD with the use of animal models and cell culture have identified oxidative stress-related retinal damage as an important contributing factor. In general, diet is an excellent source of the antioxidants, vitamins, and minerals necessary for healthy living; moreover, the general public is often receptive to recommendations made by physicians and health care workers regarding diet and supplements as a means of empowering themselves to avoid common and worrisome ailments such as AMD, which has made epidemiologists and clinicians enthusiastic about dietary intervention studies...
January 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28092820/pcr-screening-of-an-african-fermented-pearl-millet-porridge-metagenome-to-investigate-the-nutritional-potential-of-its-microbiota
#10
Fabien Saubade, Christèle Humblot, Youna M Hemery, Jean-Pierre Guyot
Cereals are staple foods in most African countries, and many African cereal-based foods are spontaneously fermented. The nutritional quality of cereal products can be enhanced through fermentation, and traditional cereal-based fermented foods (CBFFs) are possible sources of lactic acid bacteria (LAB) with useful nutritional properties. The nutritional properties of LAB vary depending on the species and even on the strain, and the microbial composition of traditional CBFFs varies from one traditional production unit (TPU) to another...
December 29, 2016: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28088106/uv-a-induced-delayed-development-in-the-larvae-of-coral-seriatopora-caliendrum
#11
Jie Zhou, Tung-Yung Fan, John Beardall, Kunshan Gao
Coral reefs are vulnerable to ultraviolet radiation (UVR, 280-400nm). Not only do the fluxes of UVR fluctuate daily, they are also increasing due to global ocean and atmospheric changes. The deleterious effects of UVR on scleractinian corals have been intensively studied, but much less is known about the response of corals in the early pre-settlement phase. In this study, we tested how UVR exposure affects survival and development of Seriatopora caliendrum larvae and examined the photophysiological changes induced in the symbiotic dinoflagellate Symbiodinium...
January 4, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28079755/macular-pigment-distribution-responses-to-high-dose-zeaxanthin-supplementation-in-patients-with-macular-telangiectasia-type-2
#12
Rene Y Choi, Aruna Gorusupudi, Kimberley Wegner, Mohsen Sharifzadeh, Werner Gellermann, Paul S Bernstein
PURPOSE: To analyze macular pigment (MP) amount and distribution in patients with macular telangiectasia Type 2 receiving oral zeaxanthin supplementation in a randomized, open-label, interventional trial. METHODS: Eight macular telangiectasia Type 2 patients were randomized to 10 mg or 20 mg of zeaxanthin per day. At each visit, best-corrected visual acuity, contrast sensitivity, fundus biomicroscopy, color fundus photography, autofluorescence imaging, optical coherence tomography, and serum carotenoid levels were tested...
January 10, 2017: Retina
https://www.readbyqxmd.com/read/28079511/circulating-carotenoids-and-subsequent-risk-of-rheumatoid-arthritis-in-women
#13
Yang Hu, Jing Cui, Jeffrey A Sparks, Susan Malspeis, Karen H Costenbader, Elizabeth W Karlson, Bing Lu
OBJECTIVES: The aim of the present study was to examine the associations between circulating carotenoids and future risk of rheumatoid arthritis (RA). METHODS: We conducted a nested case-control study consisting of 227 incident RA cases and 671 matched controls with prospectively measured plasma carotenoids (α-carotene, β-carotene, β-cryptoxanthin, lycopene and lutein/zeaxanthin) levels in the Nurses' Health Study (NHS) and Nurses' Health Study II (NHS II). Each incident RA case was matched with 3 healthy controls...
January 4, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28079227/excited-state-properties-of-%C3%AE-carotene-analogs-incorporating-a-lactone-ring
#14
Daisuke Kosumi, Takayuki Kajikawa, Kazuhiko Sakaguchi, Shigeo Katsumura, Hideki Hashimoto
Carotenoids possessing a carbonyl group along their polyene backbone exhibit unique excited state properties due to the occurrence of intramolecular charge transfer (ICT) in the excited state. In fact, the ICT characteristics of naturally occurring carbonyl carotenoids play an essential role in the highly efficient energy transfer that proceeds in aquatic photosynthetic antenna systems. In the present study, we synthesized two short-chain polyene carotenoids incorporating a lactone ring, denoted as BL-7 and BL-8, having seven and eight conjugated double bonds (n = 7 and 8), respectively...
January 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28078486/two-nadph-protochlorophyllide-oxidoreductase-por-isoforms-play-distinct-roles-in-environmental-adaptation-in-rice
#15
Choon-Tak Kwon, Suk-Hwan Kim, Giha Song, Dami Kim, Nam-Chon Paek
BACKGROUND: NADPH: protochlorophyllide oxidoreductase (POR) is an essential enzyme that catalyzes the photoreduction of protochlorophyllide to chlorophyllide, which is ultimately converted to chlorophyll in developing leaves. Rice has two POR isoforms, OsPORA and OsPORB. OsPORA is expressed in the dark during early leaf development; OsPORB is expressed throughout leaf development regardless of light conditions. The faded green leaf (fgl) is a loss-of-function osporB mutant that displays necrotic lesions and variegation in the leaves due to destabilized grana thylakoids, and has increased numbers of plastoglobules in the chloroplasts...
December 2017: Rice
https://www.readbyqxmd.com/read/28077734/intake-of-up-to-3-eggs-per-day-is-associated-with-changes-in-hdl-function-and-increased-plasma-antioxidants-in-healthy-young-adults
#16
Diana M DiMarco, Gregory H Norris, Courtney L Millar, Christopher N Blesso, Maria Luz Fernandez
BACKGROUND: HDL function may be more important than HDL concentration in determining risk for cardiovascular disease. In addition, HDL is a carrier of carotenoids and antioxidant enzymes, which protect HDL and LDL particles against oxidation. OBJECTIVE: The goal of this study was to determine the impact of consuming 0-3 eggs/d on LDL and HDL particle size, HDL function, and plasma antioxidants in a young, healthy population. METHODS: Thirty-eight healthy men and women [age 18-30 y, body mass index (in kg/m(2)) 18...
January 11, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28077273/reevaluating-the-mechanism-of-excitation-energy-regulation-in-iron-starved-cyanobacteria
#17
Hui-Yuan S Chen, Michelle Liberton, Himadri B Pakrasi, Dariusz M Niedzwiedzki
This paper presents spectroscopic investigations of IsiA, a chlorophyll a-binding membrane protein produced by cyanobacteria grown in iron-deficient environments. IsiA, if associated with photosystem I, supports photosystem I in light harvesting by efficiently transferring excitation energy. However, if separated from photosystem I, IsiA exhibits considerable excitation quenching observed as a substantial reduction of protein-bound chlorophyll a fluorescence lifetime. Previous spectroscopic studies suggested that carotenoids are involved in excitation energy dissipation and in addition play a second role in this antenna complex by supporting chlorophyll a in light harvesting by absorbing in the spectral range inaccessible for chlorophyll a and transferring excitation to chlorophylls...
January 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28076815/fluorescent-labeling-preserving-ocp-photoactivity-reveals-its-reorganization-during-the-photocycle
#18
Eugene G Maksimov, Nikolai N Sluchanko, Kirill S Mironov, Evgeny A Shirshin, Konstantin E Klementiev, Georgy V Tsoraev, Marcus Moldenhauer, Thomas Friedrich, Dmitry A Los, Suleyman I Allakhverdiev, Vladimir Z Paschenko, Andrei B Rubin
Orange carotenoid protein (OCP), responsible for the photoprotection of the cyanobacterial photosynthetic apparatus under excessive light conditions, undergoes significant rearrangements upon photoconversion and transits from the stable orange to the signaling red state. This is thought to involve a 12-Å translocation of the carotenoid cofactor and separation of the N- and C-terminal protein domains. Despite clear recent progress, the detailed mechanism of the OCP photoconversion and associated photoprotection remains elusive...
January 10, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28076559/anti-inflammatory-effect-of-lycopene-on-endotoxin-induced-uveitis-in-rats
#19
Tuğba Göncü, Elif Oğuz, Hatice Sezen, Sezen Koçarslan, Halit Oğuz, Ali Akal, Fatih Mehmet Adıbelli, Sevim Çakmak, Nurten Aksoy
Purpose: We evaluated the efficacy of lycopene, a dietary carotenoid and potent antioxidant, against ocular inflammation and oxidative stress in an experimental uveitis model. Methods: Endotoxin-induced uveitis (EIU) was induced in Sprague-Dawley rats by a single subcutaneous injection of 200 μg lipopolysaccharide (LPS). Induction of EIU was preceded by daily intraperitoneal injection of 10 mg/kg lycopene for three consecutive days (Lycopene + LPS group) or equivolume vehicle (Vehicle + LPS group)...
November 2016: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28075370/effect-of-carotenoid-supplemented-formula-on-carotenoid-bioaccumulation-in-tissues-of-infant-rhesus-macaques-a-pilot-study-focused-on-lutein
#20
Sookyoung Jeon, Martha Neuringer, Emily E Johnson, Matthew J Kuchan, Suzette L Pereira, Elizabeth J Johnson, John W Erdman
Lutein is the predominant carotenoid in the developing primate brain and retina, and may have important functional roles. However, its bioaccumulation pattern during early development is not understood. In this pilot study, we investigated whether carotenoid supplementation of infant formula enhanced lutein tissue deposition in infant rhesus macaques. Monkeys were initially breastfed; from 1 to 3 months of age they were fed either a formula supplemented with lutein, zeaxanthin, β-carotene and lycopene, or a control formula with low levels of these carotenoids, for 4 months (n = 2/group)...
January 10, 2017: Nutrients
keyword
keyword
2311
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"