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1. Do carotenoid‐based ornaments entail resource trade‐offs? An evaluation of theory and data

Author:
Koch, Rebecca E.; Hill, Geoffrey E.
Source:
Functional ecology 2018 v.32 no.8 pp. 1908-1920
ISSN:
0269-8463
Subject:
pigments,   etc   ; Aves; antioxidants; carotenoids; color;     Show all 5 Subjects
Abstract:
... Within the past several decades, resource trade‐offs have emerged as the commonly accepted explanation for how carotenoid‐based coloration links to individual performance. However, the literature on carotenoid signalling is inconsistent in how carotenoid resource trade‐offs are defined, assessed and interpreted. We provide a clear statement of the resource trade‐off hypothesis for explaining the h ...
DOI:
10.1111/1365-2435.13122

2. Nanoencapsulation of carotenoids within lipid-based nanocarriers

Author:
Rostamabadi, Hadis; Falsafi, Seid Reza; Jafari, Seid Mahdi
Source:
Journal of controlled release 2019 v.298 pp. 38-67
ISSN:
0168-3659
Subject:
pigments,   etc   ; autotrophs; bioavailability; carotenoids; human nutrition; ingredients; lipids; nanocapsules; nanocarriers; nanoemulsions; nanoparticles; solubility;     Show all 12 Subjects
Abstract:
... Carotenoids, as promising functional components in human diet, are gaining immense importance todays. Apart from their pivotal importance in photosynthetic organisms or as natural pigments, they are typically referred to as health-promotional ingredients, which offer several beneficial attributes. However, their sensitivity against environmental and process stresses, low-water solubility, as well ...
DOI:
10.1016/j.jconrel.2019.02.005

3. In vitro demethoxycarbonylation of various chlorophyll analogs by a BciC enzyme

Author:
Teramura, Misato; Harada, Jiro; Tamiaki, Hitoshi
Source:
Photosynthesis research 2019 v.139 no.1-3 pp. 163-171
ISSN:
0166-8595
Subject:
pigments,   etc   ; Chlorobium tepidum; bacteriochlorophyll; biosynthesis; carboxylic ester hydrolases; enzyme activity; moieties; substrate specificity;     Show all 8 Subjects
Abstract:
... Unique light-harvesting antennas in the green sulfur bacterium Chlorobaculum tepidum, called chlorosomes, consist of self-aggregates of bacteriochlorophyll (BChl) c. In the biosynthesis of BChl c, BciC demethoxycarbonylase removes the C13²-methoxycarbonyl group to facilitate the self-aggregation of BChl c. We previously reported the in vitro BciC-enzymatic reactions and discussed the function of t ...
DOI:
10.1007/s11120-018-0573-1

4. Effects of different pH regulators on the color properties of attapulgite/BiVO4 hybrid pigment

Author:
Wang, Xiaowen; Mu, Bin; Zhang, Anjie; An, Xingcai; Wang, Aiqin
Source:
Powder technology 2019 v.343 pp. 68-78
ISSN:
0032-5910
Subject:
pigments,   etc   ; ammonia; annealing; bismuth; color; dyes; nanoparticles; pH; powders; sodium bicarbonate; sodium carbonate; sodium hydroxide; toxicity;     Show all 13 Subjects
Abstract:
... Four different pH regulators including NaOH, Na2CO3, NaHCO3 and NH3·H2O were employed to prepare attapulgite doped bismuth yellow hybrid pigments by aqueous precipitation followed by an annealing process. Different hybrid pigments derived from different pH regulators had different color properties, and it might be related to the generated products in the process of adjusting pH, which further affe ...
DOI:
10.1016/j.powtec.2018.11.003

5. Do the presence and physiological stage of algal mats affect the meiobenthic community in a tropical estuary?

Author:
Neves, Júlia R.; Valença, Ana P.M.C.; Botter-Carvalho, Mônica L.; Santos, Paulo J.P.
Source:
Journal of experimental marine biology and ecology 2019 v.511 pp. 75-81
ISSN:
0022-0981
Subject:
pigments,   etc   ; Copepoda; algae; carbohydrates; estuaries; fauna; littoral zone; organic matter; photosynthesis; proteins; sediments; species richness;     Show all 12 Subjects
Abstract:
... The effects of compacted algal mats growing attached to sediments on the abundance and community structure of intertidal sediment meiofauna and harpacticoid copepod assemblages were evaluated on a tropical estuarine mudflat. Differences in fauna based on the presence of algae (within vs. outside the algal patches) and the physiological stages of the algae (live vs. decomposing algal patches) were ...
DOI:
10.1016/j.jembe.2018.11.010

6. Effects of nonionic surfactants on pigment excretion and cell morphology in extractive fermentation of Monascus sp. NJ1

Author:
Yang, Xuelian; Dong, Ye; Liu, Guorong; Zhang, Chan; Cao, YanPing; Wang, Chengtao
Source:
Journal of the science of food and agriculture 2019 v.99 no.3 pp. 1233-1239
ISSN:
0022-5142
Subject:
pigments,   etc   ; Monascus; biocompatibility; droplets; excretion; lipids; membrane permeability; mycelium; nonionic surfactants; secretion; submerged fermentation; temperature;     Show all 12 Subjects
Abstract:
... BACKGROUND: Different nonionic surfactants in submerged fermentation of Monascus sp. demonstrate significant differences regarding increasing pigment yield. In this study, 15 surfactants from five series were analyzed to investigate the influence of nonionic surfactants on Monascus pigments, with the aim of simultaneously obtaining a novel nonionic surfactant. RESULTS: Addition of the novel surfac ...
DOI:
10.1002/jsfa.9295

7. Growth and biochemical responses of tropical and subtropical strains of Gracilaria domingensis (Gracilariales, Rhodophyta) to temperature and irradiance variations

Author:
Castro, Julia Z.; Yokoya, Nair S.
Source:
Journal of applied phycology 2019 v.31 no.1 pp. 607-613
ISSN:
0921-8971
Subject:
pigments,   etc   ; Gracilaria domingensis; chlorophyll; coasts; females; gametophytes; light intensity; photons; phycocyanin; phycoerythrin; subtropics; temperature; tropics;     Show all 13 Subjects
Abstract:
... Gracilaria domingensis (Kützing) Sonder ex Dickie is widely distributed in the Brazilian coast and is one of a few Gracilaria species with occurrence in the southern region of the country. Its commercial importance is in the use in human food (in natura) and knowledge of the physiology is fundamental to make its cultivation successful. The objectives of the present work were to determine the limit ...
DOI:
10.1007/s10811-018-1520-4

8. Natural antioxidants used in meat products: A brief review

Author:
Ribeiro, Jéssica Souza; Santos, Maria José Missão Cordeiro; Silva, Larissa Kauly Rosa; Pereira, Luíza Carla Lavinscky; Santos, Ingrid Alves; da Silva Lannes, Suzana Caetano; da Silva, Marcondes Viana
Source:
Meat science 2019 v.148 pp. 181-188
ISSN:
0309-1740
Subject:
pigments,   etc   ; active food packaging; antioxidants; meat products; mechanism of action; natural additives; nutritive value; oxidation; proteins;     Show all 9 Subjects
Abstract:
... The lipoperoxidation and the oxidation of pigments and proteins reduces the quality and nutritional value of meat products. The use of antioxidants slows down this reaction, preserving the characteristics of the product during its storage and prolonging its useful life. The use of synthetic antioxidants in food products has been the subject of several toxicological studies. Currently, the call for ...
DOI:
10.1016/j.meatsci.2018.10.016

9. Production and extraction of carotenoids produced by microorganisms

Author:
Mussagy, Cassamo Ussemane; Winterburn, James; Santos-Ebinuma, Valéria Carvalho; Pereira, Jorge Fernando Brandão
Source:
Applied microbiology and biotechnology 2019 v.103 no.3 pp. 1095-1114
ISSN:
0175-7598
Subject:
pigments,   etc   ; additives; antioxidants; bioprocessing; biosynthesis; carotenoids; cataract; dyes; marketing; microorganisms; neoplasms; plants (botany);     Show all 12 Subjects
Abstract:
... Carotenoids are a group of isoprenoid pigments naturally synthesized by plants and microorganisms, which are applied industrially in food, cosmetic, and pharmaceutical product formulations. In addition to their use as coloring agents, carotenoids have been proposed as health additives, being able to prevent cancer, macular degradation, and cataracts. Moreover, carotenoids may also protect cells ag ...
DOI:
10.1007/s00253-018-9557-5

10. The effect of nanoparticles on the photosynthetic pigments in cadmium—zinc interactions

Author:
Haisel, Daniel; Cyrusová, Tereza; Vaněk, Tomáš; Podlipná, Radka
Source:
Environmental science and pollution research international 2019 v.26 no.4 pp. 4147-4151
ISSN:
0944-1344
Subject:
pigments,   etc   ; cadmium; heavy metals; humans; industrial applications; nanoparticles; photosynthesis; phytotoxicity; zinc; zinc oxide;     Show all 10 Subjects
Abstract:
... Heavy metal contamination, one of the greatest global problems, not only endangers humans and animals but also negatively affects plants. New trends, the production and industrial applications of metals in nanoforms, lead to release of large amounts of nanoparticles into the environment. However, the influence of nanoparticles on living organisms is not well understood. Cadmium is a heavy metal no ...
DOI:
10.1007/s11356-018-04060-7

11. Rapid colour changes in Euglena sanguinea (Euglenophyceae) caused by internal lipid globule migration

Author:
Laza-Martínez, Aitor; Fernández-Marín, Beatriz; García-Plazaola, José Ignacio
Source:
European journal of phycology 2019 v.54 no.1 pp. 91-101
ISSN:
1469-4433
Subject:
pigments,   etc   ; Euglena; absorption; astaxanthin; autotrophs; biosynthesis; chlorophyll; color; ecophysiology; energy; esterification; lipids;     Show all 12 Subjects
Abstract:
... The accumulation of red pigments, frequently carotenoids, under chronic stress is a response observed in diverse kinds of eukaryotic photoautotrophs. It is thought that red pigments protect the chlorophyll located underneath by a light-shielding mechanism. However, the synthesis or degradation of carotenoids is a slow process and this response is usually only observed when the stress is maintained ...
DOI:
10.1080/09670262.2018.1513571

12. Resting Cysts of the Pigmented Ciliate Blepharisma sinuosum Sawaya, 1940 (Ciliophora: Heterotrichea)

Author:
Cavaleiro, Jéssica; Fernandes, Noemi Mendes; da Silva‐Neto, Inácio D.; Soares, Carlos Augusto Gomes
Source:
The journal of eukaryotic microbiology 2018 v.65 no.3 pp. 422-426
ISSN:
1066-5234
Subject:
pigments,   etc   ; Heterotrichea; bacteria; encystment; morphometry; pigmentation; vacuoles;     Show all 7 Subjects
Abstract:
... The morphology of Blepharisma sinuosum resting cysts and the dynamics of pigmentation at different stages of encystment are presented for the first time. Cyst morphometrics are similar to other Blepharisma species, with three‐wall layers, bacteria surrounding the ectocyst, a conical plug, and wrinkly surface toward the plug in mature stages. The vegetative moniliform macronucleus changes to a hors ...
DOI:
10.1111/jeu.12483

13. How do birds look at their world? A novel avian visual fixation strategy

Author:
Butler, Shannon R.; Templeton, Jennifer J.; Fernández-Juricic, Esteban
Source:
Behavioral ecology and sociobiology 2018 v.72 no.3 pp. 38
ISSN:
0340-5443
Subject:
pigments,   etc   ; Sturnus vulgaris; birds; photoreceptors; retina;     Show all 5 Subjects
Abstract:
... A central assumption in behavioral research is that the observer knows where an animal is looking; however, establishing when an animal is gazing (i.e., visually fixating on an object) has been challenging in species with laterally placed eyes. We quantitatively tested three fixation strategies proposed in the literature for birds, using European starlings (Sturnus vulgaris). We did not find stron ...
DOI:
10.1007/s00265-018-2455-0

14. Hydrogen-Bonding-Mediated Solid-State Self-Assembled Isoepindolidiones (isoEpi) Crystal for Organic Field-Effect Transistor C

Author:
Zhang, Haichang; Liu, Kewei; Wu, Kuan-Yi; Chen, Yu-Ming; Deng, Ruonan; Li, Xiang; Jin, Hailiang; Li, Si; Chuang, Steven S. C.; Wang, Chien-Lung; Zhu, Yu
Source:
Journal of physical chemistry 2018 v.122 no.11 pp. 5888-5895
ISSN:
1932-7455
Subject:
pigments,   etc   ; annealing; hydrogen bonding; spectral analysis; transistors;     Show all 5 Subjects
Abstract:
... Novel pigments isoepindolidiones (isoEpi) and di-tert-butyl quinolino[8,7-h]quinoline-1,7-diyl bis(carbonate) (isoEpi-Boc) were synthesized and characterized. The spectroscopic characterizations indicated that the tert-butyloxycarbonyl (t-Boc) units could be removed from soluble isoEpi-Boc by thermal annealing, forming insoluble isoEpi with hydrogen bonding. A solid-state isoEpi-Boc crystal to iso ...
DOI:
10.1021/acs.jpcc.7b11992

15. Effect of thermal and high pressure processing on stability of betalain extracted from red beet stalks

Author:
dos Santos, CláudiaDestro; Ismail, Marliya; Cassini, AlineSchilling; Marczak, LigiaDamasceno Ferreira; Tessaro, IsabelCristina; Farid, Mohammed
Source:
Journal of food science and technology 2018 v.55 no.2 pp. 568-577
ISSN:
0022-1155
Subject:
pigments,   etc   ; heat treatment; high pressure treatment; temperature;     Show all 4 Subjects
Abstract:
... Red beet stalks are a potential source of betalain, but their pigments are not widely used because of their instability. In the present work, the applicability of high pressure processing (HPP) and high temperature short time (HTST) thermal treatment was investigated to improve betalain stability in extracts with low and high concentrations. The HPP was applied at 6000 bar for 10, 20 and 30 min an ...
DOI:
10.1007/s13197-017-2966-0

16. Cultivar dependent impact of soil amendment with water retaining polymer on olive (Olea europaea L.) under two water regimes

Author:
M’barki, Naouraz; Aissaoui, Feten; Chehab, Hechmi; Dabbaghi, Olfa; del Giudice, Tommaso; Boujnah, Dalenda; Mechri, Beligh
Source:
Agricultural water management 2019 v.216 pp. 70-75
ISSN:
0378-3774
Subject:
pigments,   etc   ; Olea europaea; chlorophyll; cultivars; greenhouse production; hydrogels; olives; photosynthesis; plantlets; polymers; soil amendments; water content; water stress;     Show all 13 Subjects
Abstract:
... Hydrogels have a large interest for commercial application in agriculture. Our experiment was performed under greenhouse conditions, to examine the effect of the hydrogel “stockosorb-660” (TS) compared with non treated plants (TC). As compared to TC treatment, the hydrogel treatment increased clearly the growth responses, photosynthetic pigments, the dry weights and the relative water content of o ...
DOI:
10.1016/j.agwat.2019.01.016

17. Selective leaching of vanadium over iron from vanadium slag

Author:
Zhang, Xuefei; Fang, Dean; Song, Shizhe; Cheng, Gongjin; Xue, Xiangxin
Source:
Journal of hazardous materials 2019 v.368 pp. 300-307
ISSN:
0304-3894
Subject:
pigments,   etc   ; ceramics; chromium; iron; leachates; leaching; processing technology; raw materials; slags; sulfuric acid; temperature; titanium dioxide; vanadium;     Show all 13 Subjects
Abstract:
... A new comprehensive utilization of vanadium slag (VS) method focusing on inhibiting leaching of iron (Fe) during the leaching of vanadium (V) using sulfuric acid (SA) was proposed. In this process, Cr2O3 was added to VS to conjugate with Fe in the VS to form (Fex,Cr1-x)2O3 which is insoluble in SA, resulting in the decrease of leaching ratio (LR) of Fe to avoid the subsequent separation difficulty ...
DOI:
10.1016/j.jhazmat.2019.01.060

18. Algae community response to climate change and nutrient loading recorded by sedimentary phytoplankton pigments in the Changtan Reservoir, China

Author:
Huo, Shouliang; Zhang, Hanxiao; Ma, Chunzi; Xi, Beidou; Zhang, Jingtian; He, Zhuoshi; Li, Xiaochuang; Wu, Fengchang
Source:
Journal of hydrology 2019 v.571 pp. 311-321
ISSN:
0022-1694
Subject:
pigments,   etc   ; Bacillariophyceae; Chlorophyta; Cyanobacteria; air temperature; algae; biomass; global warming; hydrology; models; phosphorus; phytoplankton; pollution load; water quality; China;     Show all 15 Subjects
Abstract:
... Climate change is likely to stimulate variations in phytoplankton composition and production in gradually eutrophicating water, with negative consequences for the water quality of many reservoirs. This study analyzed the effects of climate warming and increased nutrient loading on algae communities recorded by sedimentary pigments in the Changtan Reservoir of southeastern China from 1985 to 2015. ...
DOI:
10.1016/j.jhydrol.2019.02.005

19. Decomposition of cyanobacterial bloom contributes to the formation and distribution of iron-bound phosphorus (Fe-P): Insight for cycling mechanism of internal phosphorus loading

Author:
Wang, Zhicong; Huang, Shun; Li, Dunhai
Source:
The Science of the total environment 2019 v.652 pp. 696-708
ISSN:
0048-9697
Subject:
pigments,   etc   ; Fourier transform infrared spectroscopy; Pseudomonas; clay; eutrophication; lakes; microbial communities; phosphorus; pollution load; sediments; statistical analysis;     Show all 11 Subjects
Abstract:
... Lake eutrophication and the resulting cyanobacterial blooms have become a global water environment problem. These eutrophic lakes usually have relatively high internal phosphorus loading such as Fe-P to support the formation of cyanobacterial blooms. In order to reveal the mechanisms and processes of phosphorus cycling in lake sediments, in this study, Lake Chaohu was selected as the research area ...
DOI:
10.1016/j.scitotenv.2018.10.260

20. Bio-based polymer colorants from nonaqueous reactive dyeing of regenerated cellulose for plastics and textiles

Author:
Zhao, Jiangbin; Ding, Lei; Sui, Xiaofeng; Mao, Zhiping; Xu, Hong; Zhong, Yi; Zhang, Linping; Chen, Zhize; Wang, Bijia
Source:
Carbohydrate polymers 2019 v.206 pp. 734-741
ISSN:
0144-8617
Subject:
pigments,   etc   ; bamboos; biodegradability; cellulose; color; cotton; dimethyl sulfoxide; dyeing; dyes; emulsions; fabrics; plastics; solvolysis; thermal properties; viscose; wastes; wood pulp;     Show all 17 Subjects
Abstract:
... A general way to prepare bio-based polymer colorant by reactive dyeing of regenerated cellulose (RC) in dimethyl sulfoxide (DMSO) was established. Up to 40% higher dye utilization was achieved compared with aqueous reactive dyeing of RC for two reasons. 1. Lower liquor ratio of 1:9 could be applied for the concentrated RC suspensions in DMSO was less viscous. 2. Dye loss from solvolysis was turned ...
DOI:
10.1016/j.carbpol.2018.11.056