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1. Genetic variability for kernel tocopherols and haplotype analysis of γ-tocopherol methyl transferase (vte4) gene among exotic- and indigenous- maize inbreds

Author:
Das, Abhijit K.; Muthusamy, Vignesh; Zunjare, Rajkumar U.; Baveja, Aanchal; Chauhan, Hema S.; Bhat, Jayant S.; Guleria, Satish K.; Kumar, Bhupender; Saha, Supradip; Hossain, Firoz
Source:
Subtropical plant science 2020 v.88 pp. 103446
ISSN:
0889-1575
Subject:
alpha-tocopherol; beta-tocopherol; delta-tocopherol,   etc   ; biofortification; corn; gamma-tocopherol; genes; genetic analysis; genetic variation; haplotypes; inbreeding; indigenous species; introduced species; seeds; transferases; vitamin E deficiency; India;     Show all 17 Subjects
Abstract:
... Vitamin-E deficiency is a serious health problem worldwide. In maize, α-tocopherol possessing the highest vitamin-E activity is regulated by vte4 gene. Here, 54 maize inbreds possessing three favourable (0/0, 7/0 and 0/118) and one unfavourable (7/118) haplotypes of vte4 were evaluated at three locations. Significant variation was observed for α-, γ-, δ- and total-tocopherol. Variation in β-tocoph ...
DOI:
10.1016/j.jfca.2020.103446

2. Applications of packed and capillary supercritical fluid chromatography in the separation of tocochromanols

Author:
Ng, Mei Han; Din, Ahmad Kushairi
Source:
Journal of separation science 2020 v.43 no.1 pp. 285-291
ISSN:
1615-9306
Subject:
tocopherols,   etc   ; equipment; physicochemical properties; supercritical fluid chromatography; tocotrienols;     Show all 5 Subjects
Abstract:
... Tocochromanols consisting of tocopherols and tocotrienols, is collectively known as vitamin E. Similarity in their structures, physical and chemical properties rendered the tocochromanols to be subject of chromatography interest. Supercritical fluid chromatography is a highly efficient tool for the separation and analysis of tocochromanols. Separation and analysis of tocochromanols using supercrit ...
DOI:
10.1002/jssc.201900342

3. Study of subcellular localization of Glycine max γ-tocopherol methyl transferase isoforms in N. benthamiana

Author:
Kumari, Khushboo; Rai, Monika Prakash; Bansal, Navita; Prashat, G. Rama; Kumari, Sweta; Srivathsa, Rohini; Dahuja, Anil; Sachdev, Archana; Praveen, Shelly; Vinutha, T.
Source:
3 Biotech 2020 v.10 no.3 pp. 110
ISSN:
2190-572X
Subject:
alpha-tocopherol; gamma-tocopherol; tocopherol O-methyltransferase,   etc   ; Glycine max; Nicotiana benthamiana; amino acids; biosynthesis; cell membranes; chloroplast transit peptides; chloroplasts; confocal microscopy; cytosol; hydrophobicity; oxidative stress; peptides; promoter regions;     Show all 16 Subjects
Abstract:
... Gamma-tocopherol methyltransferase (γ-TMT) converts γ-toc to α-toc—the rate limiting step in toc biosynthesis. Sequencing results revealed that the coding regions of γ-TMT1 and γ-TMT3 were strongly similar to each other (93% at amino acid level). Based on the differences in the N-terminal amino acids, Glycine max-γ-TMT proteins are categorized into three isoforms: γ-TMT1, 2 and 3. In silico struct ...
DOI:
10.1007/s13205-020-2086-9
PubMed:
32099748
PubMed Central:
PMC7013018

4. Isolation and Determination of Tocopherols and Tocotrienols from the Seed of Capparis Ovata Grown in Turkey by Reversed-Phase High-Performance Liquid Chromatography

Author:
Bakir, Diyar Selen; Yalcin, Guler; Cucu, Aysen Kurt
Source:
Chromatographia 2020 v.83 no.1 pp. 77-86
ISSN:
0009-5893
Subject:
alpha-tocopherol; delta-tocopherol; gamma-tocopherol,   etc   ; Capparis; anti-inflammatory activity; antioxidants; body fluids; delta-tocotrienol; foods; human nutrition; liquids; monitoring; reversed-phase high performance liquid chromatography; solid phase extraction; Turkey (country);     Show all 15 Subjects
Abstract:
... Vitamin E is an essential vitamin, consisting of eight organic liposoluble compounds which are tocopherols and tocotrienols. Tocopherols and tocotrienols are collectively named ‘tocols’. Tocols are well-known for their potent biological activities, such as antioxidant, anticancer, anti-aging, anti-inflammatory activities, and they prevent vascular occlusion by providing fluidity in the veins. They ...
DOI:
10.1007/s10337-019-03816-8

5. Enhancement of chemical stability of curcumin-enriched oil-in-water emulsions: Impact of antioxidant type and concentration

Author:
Kharat, Mahesh; Skrzynski, Matt; Decker, Eric Andrew; McClements, David Julian
Source:
Food chemistry 2020 v.320 pp. 126653
ISSN:
0308-8146
Subject:
alpha-tocopherol,   etc   ; antioxidants; ascorbic acid; beverages; bioactive properties; chemical degradation; curcumin; emulsions; oils; palmitates; water solubility;     Show all 11 Subjects
Abstract:
... Curcumin is claimed to have many health benefits, but it has low chemical stability. In this study, the influence of food-grade antioxidants on the chemical degradation of curcumin-enriched oil-in-water emulsions was examined. The curcumin degradation rate and extent depended on antioxidant type. The water-soluble antioxidants were more effective at protecting curcumin from degradation than the oi ...
DOI:
10.1016/j.foodchem.2020.126653

6. Efficient solid phase extraction of α-tocopherol and β-sitosterol from sunflower oil waste by improving the mesoporosity of the zeolitic adsorbent

Author:
Karaoglu, Oznur; Alpdogan, Guzin; Zor, Sule Dinc; Bildirir, Hakan; Ertas, Erdal
Source:
Food chemistry 2020 v.311 pp. 125890
ISSN:
0308-8146
Subject:
alpha-tocopherol,   etc   ; adsorbents; beta-sitosterol; porosity; recycling; solid phase extraction; sunflower oil; wastes; zeolites;     Show all 9 Subjects
Abstract:
... The recovery of α-tocopherol and β-sitosterol from the deodorizer distillate of sunflower oil using solid phase extraction is reported. Performance of the silicon-rich and inexpensive zeolite, ZSM-5, and its modified versions were compared as adsorbents. Modifications of the zeolite frame were performed under both acidic and basic conditions to desilicate and dealuminate the parent ZSM-5. Base tre ...
DOI:
10.1016/j.foodchem.2019.125890

7. Sinapic acid derivatives in microwave-pretreated rapeseeds and minor components in oils

Author:
Cong, Yanxia; Zheng, Mingming; Huang, Fenghong; Liu, Changsheng; Zheng, Chang
Source:
Subtropical plant science 2020 v.87 pp. 103394
ISSN:
0889-1575
Subject:
tocopherols,   etc   ; decarboxylation; glucosides; malates; microwave treatment; oxidative stability; rapeseed; rapeseed oil; sinapic acid; sinapine; sterols;     Show all 11 Subjects
Abstract:
... Microwave pretreatment has been considered to improve the quality of rapeseed oil for canolol generation. Canolol is assumed to be formed by the decarboxylation of sinapic acid (SA). In this work, sinapic acid derivatives in 39 microwave-pretreated rapeseeds and their roles in the enhanced oxidative stability of rapeseed oils were investigated. The average contents of sinapic acid derivatives in r ...
DOI:
10.1016/j.jfca.2019.103394

8. The role of the intestinal-protein corona on the mucodiffusion behaviour of new nanoemulsions stabilised by ascorbyl derivatives

Author:
Plaza-Oliver, M.; Santander-Ortega, M.J.; Castro-Vázquez, L.; Rodríguez-Robledo, V.; González-Fuentes, J.; Marcos, P.; Lozano, M.V.; Arroyo-Jiménez, M.M.
Source:
Colloids and surfaces 2020 v.186 pp. 110740
ISSN:
0927-7765
Subject:
alpha-tocopherol,   etc   ; antioxidant activity; drugs; intestinal secretions; intestines; mucus; nanocarriers; nanoemulsions; toxicity;     Show all 9 Subjects
Abstract:
... Nanoemulsions are vesicular systems with great potential for the delivery of drugs, which significantly depends on the appropriate selection of the components that constitute them. In this sense, the use of materials with adequate toxicity profiles for the oral route provides additional advantages in terms of safety concerns avoidance. This work describes the formulation of novel two-component nan ...
DOI:
10.1016/j.colsurfb.2019.110740

9. Molecular diversity and genetic variability of kernel tocopherols among maize inbreds possessing favourable haplotypes of γ-tocopherol methyl transferase (ZmVTE4)

Author:
Das, Abhijit Kumar; Jaiswal, Sunil Kumar; Muthusamy, Vignesh; Zunjare, Rajkumar Uttamrao; Chauhan, Hema Singh; Chand, Gulab; Saha, Supradip; Hossain, Firoz
Source:
Journal of plant biochemistry and biotechnology 2019 v.28 no.3 pp. 253-262
ISSN:
0971-7811
Subject:
alpha-tocopherol; delta-tocopherol; gamma-tocopherol,   etc   ; Zea mays; alleles; biofortification; corn; cost effectiveness; gene frequency; genetic variation; haplotypes; inbreeding; microsatellite repeats; seeds; tocopherol O-methyltransferase; vitamin E deficiency;     Show all 16 Subjects
Abstract:
... Vitamin E deficiency is a serious health concern in humans. Biofortification of maize kernel with high vitamin E (α-tocopherol) provides sustainable and cost-effective solution. Here, a set of 24 inbreds possessing favourable alleles of γ-tocopherol methyl transferase (ZmVTE4) was analyzed. Significant variation for α-tocopherol (10.08–32.74 µg/g), γ-tocopherol (4.80–53.09 µg/g), δ-tocopherol (1.0 ...
DOI:
10.1007/s13562-018-0470-x

10. Lactational changes of fatty acids and fat-soluble antioxidants in human milk from healthy Chinese mothers

Author:
Wu, Ke; Zhu, Jie; Zhou, Lili; Shen, Liwei; Mao, Yingyi; Zhao, Yanrong; Gao, Runying; Lou, Zeru; Cai, Meiqin; Wang, Bei
Source:
The British journal of nutrition 2020 v.123 no.8 pp. 841-848
ISSN:
1475-2662
Subject:
alpha-tocopherol; gamma-tocopherol,   etc   ; antioxidants; arachidonic acid; beta-carotene; breast feeding; colostrum; fatty acid composition; high performance liquid chromatography; human milk fat; infant formulas; lactation; lutein; lycopene; milk; mothers; nutrients;     Show all 17 Subjects
Abstract:
... Human milk fat is specially tailored to supply the developing infant with adequate and balanced nutrients. The present study aimed to quantify the composition of fatty acids, tocopherols and carotenoids in human milk, with special emphasis on the lactational changes. Colostrum, transitional and mature milk samples were collected longitudinally from the same forty-two healthy, well-nourished Chines ...
DOI:
10.1017/S0007114520000239

11. Effect of Moringa oleifera leaf powder on drying kinetics, physico‐chemical properties, ferric reducing antioxidant power, α‐tocopherol, β‐carotene, and lipid oxidation of dry pork sausages during processing and storage

Author:
Mukumbo, Felicitas E.; Descalzo, Adriana M.; Collignan, Antoine; Hoffman, Louwrens C.; Servent, Adrien; Muchenje, Voster; Arnaud, Elodie
Source:
Journal of food processing and preservation 2020 v.44 no.1 pp. e14300
ISSN:
0145-8892
Subject:
alpha-tocopherol; gamma-tocopherol,   etc   ; Moringa oleifera; additives; antioxidant activity; antioxidants; beta-carotene; cured meats; drying; leaves; lipid peroxidation; nitrates; nitrites; oils; phenolic compounds; pork; sausages; storage time; thiobarbituric acid-reactive substances;     Show all 19 Subjects
Abstract:
... The potential of Moringa oleifera leaf powder (MLP) to limit lipid oxidation in nitrite‐free unfermented dry pork sausages (droëwors) was investigated. Total phenolic compounds, α‐tocopherol and β‐carotene content of MLP was quantified. Droëwors with no additives, 0.75 g/100 g MLP or 15 mg/kg vitamin E (VE) oil were processed and sampled after drying (3 days) and during 56 days of storage. Thiobar ...
DOI:
10.1111/jfpp.14300

12. Metabolic engineering of soybean seeds for enhanced vitamin E tocochromanol content and effects on oil antioxidant properties in polyunsaturated fatty acid-rich germplasm

Author:
Konda, Anji Reddy; Nazarenus, Tara J.; Nguyen, Hanh; Yang, Junsi; Gelli, Malleswari; Swenson, Samantha; Shipp, Jamie M.; Schmidt, Monica A.; Cahoon, Rebecca E.; Ciftci, Ozan N.; Zhang, Chunyu; Clemente, Tom Elmo; Cahoon, Edgar B.
Source:
Metabolic engineering 2020 v.57 pp. 63-73
ISSN:
1096-7176
Subject:
gamma-tocopherol; tocopherol O-methyltransferase,   etc   ; antioxidant activity; barley; free radical scavengers; germplasm; metabolic engineering; omega-3 fatty acids; oxidative stability; polyunsaturated fatty acids; progeny; seeds; soybean oil; soybeans; tocotrienols; transgenes;     Show all 16 Subjects
Abstract:
... Soybean seeds produce oil enriched in oxidatively unstable polyunsaturated fatty acids (PUFAs) and are also a potential biotechnological platform for synthesis of oils with nutritional omega-3 PUFAs. In this study, we engineered soybeans for seed-specific expression of a barley homogentisate geranylgeranyl transferase (HGGT) transgene alone and with a soybean γ-tocopherol methyltransferase (γ-TMT) ...
DOI:
10.1016/j.ymben.2019.10.005

13. Ripening of ‘Hass’ avocado mesocarp alters its phytochemical profile and the in vitro cytotoxic activity of its methanolic extracts

Author:
Villa-Rodriguez, Jose A.; Yahia, Elhadi M.; González-León, Alberto; Ifie, Idolo; Robles-Zepeda, Ramon Enrique; Domínguez-Avila, J. Abraham; González-Aguilar, Gustavo A.
Source:
South African journal of botany 2020 v.128 pp. 1-8
ISSN:
0254-6299
Subject:
alpha-tocopherol; delta-tocopherol,   etc   ; avocados; beta-carotene; beta-sitosterol; chemical constituents of plants; cytotoxicity; dose response; epicatechin; human cell lines; hydrophilicity; lipophilicity; liquid chromatography; lutein; mesocarp; oils; protocatechuic acid; quantitative analysis; quercetin; ripening;     Show all 20 Subjects
Abstract:
... Avocado is an excellent source of phytochemicals with remarkable bioactive properties. This study evaluated the effect of ripeness stage of ‘Hass’ avocado on the profile and content of lipophilic and hydrophilic phytochemicals and their in vitro cytotoxic activity. Qualitative and quantitative analyses of the major phytochemicals were conducted in four stages of ripeness, using gas and liquid chro ...
DOI:
10.1016/j.sajb.2019.09.020

14. A comprehensive profiling of free, conjugated and bound phenolics and lipophilic antioxidants in red and green lentil processing by-products

Author:
Sun, Yong; Deng, Zeyuan; Liu, Ronghua; Zhang, Hua; Zhu, Honghui; Jiang, Li; Tsao, Rong
Source:
Food chemistry 2020 v.325 pp. 126925
ISSN:
0308-8146
Subject:
tocopherols,   etc   ; antioxidant activity; antioxidants; bioactive compounds; byproducts; carotenoids; high performance liquid chromatography; hulls; hydrophilicity; lentils; lipophilicity; phenolic compounds;     Show all 12 Subjects
Abstract:
... A systemic approach was taken in profiling the hydrophilic and lipophilic antioxidants in lentil hulls using a combination of HPLC, LC-ESI-MS² and GC techniques. A total of 37 phenolics were tentatively identified in the hydrophilic fractions, while four carotenoids and three tocopherols were found in the lipophilic fraction. Results showed that in addition to the high free extractable phenolics, ...
DOI:
10.1016/j.foodchem.2020.126925

15. Olive oil mixtures. Part one: Decisional trees or how to verify the olive oil percentage in declared blends

Author:
Gómez-Coca, Raquel B.; Pérez-Camino, María del Carmen; Martínez-Rivas, José M.; Bendini, Alessandra; Gallina Toschi, Tullia; Moreda, Wenceslao
Source:
Food chemistry 2020 v.315 pp. 126235
ISSN:
0308-8146
Subject:
gamma-tocopherol,   etc   ; European Union; alkanes; commercialization; decision support systems; ingredients; olive oil; olives; seed oils; sterols; triacylglycerols;     Show all 11 Subjects
Abstract:
... The commercialization of declared blends of olive oil and seed oil is something long approved by the European Union. There, the olive oil percentage must be at least 50% if the producer aims to advertise its presence on the front label, i.e., somewhere other than in the ingredients list. However, the Regulation did not propose any method to verify such proportion. For this purpose, we recommend th ...
DOI:
10.1016/j.foodchem.2020.126235

16. Composition of organic compounds from low-temperature burning of lignite and their application as tracers in ambient air

Author:
Rybicki, Maciej; Marynowski, Leszek; Simoneit, Bernd R.T.
Source:
Chemosphere 2020 v.249 pp. 126087
ISSN:
0045-6535
Subject:
alpha-tocopherol,   etc   ; Miocene epoch; biomass burning; cellulose; combustion; isomers; lignite; organic matter; particulates; smoke; thermal degradation; thermodynamics; tracer techniques; Poland;     Show all 14 Subjects
Abstract:
... Levoglucosan, a product from thermal decomposition of cellulose, is widely known as an organic tracer of biomass burning, but has also been reported from coal smoke particulate matter (PM) including lignites. This study provides direct evidence that levoglucosan is generated not only during low-temperature burning/smoldering of xylite, but also from other lignite types including detritic and detro ...
DOI:
10.1016/j.chemosphere.2020.126087

17. Pharmacokinetics of α-tocopherol stereoisomers in plasma and milk of cows following a single dose injection of all-rac-α-tocopheryl acetate

Author:
Jensen, S.K.; Lashkari, S.; Kristensen, N.B.
Source:
Food chemistry 2020 v.310 pp. 125931
ISSN:
0308-8146
Subject:
alpha-tocopherol,   etc   ; acetates; bioactive properties; dairy cows; half life; intramuscular injection; lactating females; lactation; liver; milk; pharmacokinetics; secretion; stereoisomers;     Show all 13 Subjects
Abstract:
... Among different stereoisomers of all-rac-α-tocopherol, 2R-stereoisomers have higher biological activities than their 2S-stereoisomers. Two experiments were conducted to study the pharmacokinetics of stereoisomers of all-rac-α-tocopherol and investigated the discrimination and distribution of α-tocopherol stereoisomers in plasma and milk as well as quantitative secretion into milk with lactating Ho ...
DOI:
10.1016/j.foodchem.2019.125931

18. The degradation of bioactive compounds and formation of their oxidation derivatives in refined rapeseed oil during heating in model system

Author:
Kasprzak, Maria; Rudzińska, Magdalena; Przybylski, Roman; Kmiecik, Dominik; Siger, Aleksander; Olejnik, Anna
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2020 v.123 pp. 109078
ISSN:
0023-6438
Subject:
tocopherols,   etc   ; bioactive compounds; free fatty acids; frying; heat; molecular weight; oxidation; phytosterols; polar compounds; rapeseed oil; temperature; volatile compounds;     Show all 12 Subjects
Abstract:
... Thermo-oxidative changes were assessed during simulated storage and frying of refined rapeseed oil (RRO). When RRO was heated at 60 and 180 °C for 8h phytosterols content decreased by 10 and 40%, however tocopherols disappeared by 7 and 30%, respectively. The oxyphytosterols content increased during first 2 h of heating at both temperatures to 55 and 211 μg/g, however extended heating resulted in ...
DOI:
10.1016/j.lwt.2020.109078

19. Alleles to Enhance Antioxidant Content in Maize—A Genome-Wide Association Approach

Author:
Alves, Mara Lisa; Bento-Silva, Andreia; Carbas, Bruna; Gaspar, Daniel; Paulo, Manuel; Brites, Cláudia; Mendes-Moreira, Pedro; Brites, Carla Moita; Bronze, Maria do Rosário; Malosetti, Marcos; van Eeuwijk, Fred; Vaz Patto, Maria Carlota
Source:
Journal of agricultural and food chemistry 2020 v.68 no.13 pp. 4051-4061
ISSN:
1520-5118
Subject:
alpha-tocopherol,   etc   ; Zea mays; alleles; antioxidants; biochemical pathways; breeding; carotenoids; corn; food crops; genomics; germplasm; single nucleotide polymorphism;     Show all 12 Subjects
Abstract:
... The interest in antioxidant compound breeding in maize (Zea mays L.), a major food crop, has increased in recent years. However, breeding of antioxidant compounds in maize can be hampered, given the complex genetic nature of these compounds. In this work, we followed a genome-wide association approach, using a unique germplasm collection (containing Portuguese germplasm), to study the genetic basi ...
DOI:
10.1021/acs.jafc.9b07190

20. Distribution of Bibenzyls, Prenyl Bibenzyls, Bis-bibenzyls, and Terpenoids in the Liverwort Genus Radula

Author:
Asakawa, Yoshinori; Nagashima, Fumihiro; Ludwiczuk, Agnieszka
Source:
Journal of natural products 2020 v.83 no.3 pp. 756-769
ISSN:
1520-6025
Subject:
alpha-tocopherol,   etc   ; Radula; antagonists; cannabinoids; cytotoxicity; lipid bodies; mosses and liverworts; neoplasm cells; nitric oxide; sesquiterpenoids; vasopressin;     Show all 11 Subjects
Abstract:
... Plants of the Radula genus are chemically very distinct from the other liverworts since they mainly elaborate bibenzyls including bibenzyl cannabinoids and prenyl bibenzyl derivatives, as well as bis-bibenzyls. Several of these components show biological activities such as psychoactivity, vasopressin antagonist, antimicrobial, antifungal, and NO production inhibitory activity, and cytotoxic activi ...
DOI:
10.1021/acs.jnatprod.9b01132