Výsledky vyhledávání - "Hendra M. Willemen"

Photo-stability of a flavonoid dye in presence of aluminium ions

Autor: Hendra M. Willemen, Monique S.A. van Vuuren, Goverdina C. H. Derksen, Alexandre Villela, Teris A. van Beek

Publikováno v: Dyes and Pigments 162 (2019)
Dyes and Pigments, 162, 222-231

The main colouring compounds of the dye plant weld (Reseda luteola L.) are the flavones luteolin (lut), lut-7-O-glucoside and lut-7,3ʹ-O-diglucoside. Alum (an aluminium salt)-premordanted wool dyed with weld leads to yellow colours that are of low r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5b733770fa92da7a5cf2e3dfdb4af1e
https://doi.org/10.1016/j.dyepig.2018.10.021

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Development of a process for obtaining non-mutagenic madder root (Rubia tinctorum) extract for textile dyeing

Autor: Goverdina C. H. Derksen, Maurice C. R. Franssen, Hendra M. Willemen, Teris A. van Beek, Frédérique L. van Holthoon, Cyrille A.M. Krul

Publikováno v: Industrial Crops and Products 164 (2021)
Industrial Crops and Products, 164

Madder, used as a red dye, contains anthraquinones, and some of these can react with DNA possibly causing mutagenic effects. This is especially true for 1,3-dihydroxyanthraquinones with a hydroxymethyl (e.g., lucidin 6, ibericin 10) or methyl group (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98a38931f9fec161061f7eb4e18a978a
https://research.wur.nl/en/publications/development-of-a-process-for-obtaining-non-mutagenic-madder-root-

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Comparison of madder (Rubia tinctorum L.) and weld (Reseda luteola L.) total extracts and their individual dye compounds with regard to their dyeing behaviour, colour, and stability towards light

Autor: Hendra M. Willemen, Goverdina C. H. Derksen, Geeske J. P. van den Meijdenberg, Teris A. van Beek

Publikováno v: Coloration Technology, 135(1), 40-47
Coloration Technology 135 (2019) 1

This paper reports on the colorimetric properties of natural dyes from madder and weld plants. For both crops, a comparison is made among several individual dye compounds and the total plant extracts. Dyeing properties, colour properties and colour s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9faad75676da2d22992bdb5b91bf40ab
https://research.wur.nl/en/publications/comparison-of-madder-rubia-tinctorum-l-and-weld-reseda-luteola-l-

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A Small-Angle Neutron Scattering Study of Cholic Acid-Based Organogel Systems

Autor: Pierre Terech, Hendra M. Willemen, Bruno Demé, Wim G. Bouwman, Antonius T. M. Marcelis, Ernst J. R. Sudhölter

Publikováno v: Langmuir, 20(6), 2075-2080
Langmuir 20 (2004) 6

Small-angle neutron scattering measurements were performed on some cholic acid-based gel systems in order to gain detailed information about the network structure. The presence of thin fibers with a radius of about 10-20 Å was found for various gela

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2b8d2b8d069f81f33da0fed47b528dc
https://doi.org/10.1021/la035041y

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Thermodynamics of micellization of cholic acid based facial amphiphiles carrying three permanent ionic head groups

Autor: A.T.M. Marcelis, Ernst J. R. Sudhölter, Hendra M. Willemen

Publikováno v: Langmuir, 19(7), 2588-2591
Langmuir 19 (2003) 7

This paper describes a series of cholic acid based facial amphiphiles carrying three ionic headgroups. Their micellization behavior in water was studied as a function of spacer length and alkyl tail length: both were found to have a small influence o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20ef2b17a705464843dcfa89fc7cf0e2
https://doi.org/10.1021/la0267443

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N-Cholyl Amino Acid Alkyl Esters - A Novel Class of Organogelators

Autor: Antonius T. M. Marcelis, Tina Vermonden, Hendra M. Willemen, Ernst J. R. Sudhölter

Publikováno v: European Journal of Organic Chemistry, 12, 2329-2335
Scopus-Elsevier
European Journal of Organic Chemistry 12 (2001)

Several N-cholyl amino acid alkyl esters were found to act as novel, potent organogelators for aromatic solvents and cyclohexene. These novel organogelators afford stable, transparent, and thermoreversible gels. Modification of the molecular structur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c13f1c9729ca0b4431c10244518057af
https://doi.org/10.1002/1099-0690(200106)2001:12<2329::aid-ejoc2329>3.0.co

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Bioreduction of carboxylic acids by Pyrococcus furiosus in batch cultures

Autor: Hans Wassink, Hendra M. Willemen, Colja Laane, Huub Haaker, Eyke C. D. van den Ban

Publikováno v: Enzyme and Microbial Technology 25 (1999)
Enzyme and Microbial Technology, 25, 251-257

The reduction of aromatic and aliphatic (di)carboxylic acids to their corresponding aldehydes and alcohols by the hyperthermophilic organism Pyrococcus furiosus was investigated. The reduction was performed with P. furiosus cells growing in the prese

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b910354eefc7278e3482e75ed6b2323f
https://doi.org/10.1016/s0141-0229(99)00036-8

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