Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Harro Lentz"'
Publikováno v:
The Journal of Supercritical Fluids. 79:123-126
In this study we investigated the use of near critical liquid CO2 for the extraction of chaste tree ripe fruits (Vitex agnus-castus L.). Two procedures utilizing near critical liquid CO2 were tested: (1) the extraction of plant material via continuou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f646268329179fac3a16e6b871a1c737
https://doi.org/10.1016/j.supflu.2013.02.008
https://doi.org/10.1016/j.supflu.2013.02.008
Publikováno v:
Zeitschrift für Naturforschung B. 60:205-210
Roots of ginseng plants have been extracted with liquid ammonia or methanol/water (60:40 v/v). The extracts were characterized by means of a gradient HPLC/MS method and the results were compared with each other. The ginsenosides Rb1, Rb2, Rc, Rd, Re,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8973f031c189f31100335c0fa2562c89
https://doi.org/10.1515/znb-2005-0213
https://doi.org/10.1515/znb-2005-0213
Autor:
Frank Müller, Harro Lentz
Publikováno v:
Chemical Engineering & Technology. 25:378-381
This paper describes an apparatus and a process for quasi-continuous flow of solids for extractions or reactions with compressed fluids at elevated pressure. The apparatus consists of a hollow cylinder built from steel as a pressure resistant jacket,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96fe9035979fe3f5abfbc2a58d11e3a7
https://doi.org/10.1002/1521-4125(200204)25:4<378::aid-ceat378>3.0.co
https://doi.org/10.1002/1521-4125(200204)25:4<378::aid-ceat378>3.0.co
Autor:
Frank Müller, Harro Lentz
Publikováno v:
Chemie Ingenieur Technik. 73:985-988
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d835b857e5d6107c9fa885d843ea275
https://doi.org/10.1002/1522-2640(200108)73:8<985::aid-cite985>3.0.co
https://doi.org/10.1002/1522-2640(200108)73:8<985::aid-cite985>3.0.co
Publikováno v:
Zeitschrift für Naturforschung B. 55:326-332
Extractions of ginsenosides from ginseng roots with liquid ammonia, methanol/water (60:40; v/v) or water were carried out. The extracts have been analyzed qualitatively and quantitatively to valuate yield and selectivity of extractions of ginsenoside
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8b0a0d9bbd1d24fe0dc85262b703c41
https://doi.org/10.1515/znb-2000-3-415
https://doi.org/10.1515/znb-2000-3-415
Autor:
Jutta Haupt-Schott, Harro Lentz
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 124:1083-1087
Substances can be extracted in pressure resistant hydraulic tubes with carbon dioxide, ammonia, or other compressed solvents and the extracts can be analyzed by conventional methods. The elevated pressure is indicated by a small gauge and after extra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::626664a24772de25dbccd4a13fe8fd31
https://doi.org/10.1007/bf00810015
https://doi.org/10.1007/bf00810015
Publikováno v:
Zeitschrift für Naturforschung B. 46:829-834
Korean Ginseng roots were extracted with methanol-water, water and liquid and supercritical ammonia. The yields of the extracts by different methods are reported. The extracts were analyzed by high-performance thin-layer chromatography. Retention val
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::672071d8655aef775402a78f2557a4a7
https://doi.org/10.1515/znb-1991-0619
https://doi.org/10.1515/znb-1991-0619
Publikováno v:
Die Makromolekulare Chemie. 192:165-176
A new rotational viscometer is presented which can be operated up to 2 000 bar and a maximum shear stress of 420 Pa. It allows, for the first time, to investigate the non-Newtonian flow behaviour of moderately concentrated polymer solutions. Results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b6c95ce166769db34c98c5d2a252d79
https://doi.org/10.1002/macp.1991.021920115
https://doi.org/10.1002/macp.1991.021920115
Publikováno v:
Chemie Ingenieur Technik. 68:579-581
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6afb8f51089903d5fbe4cc5d613c70bb
https://doi.org/10.1002/cite.330680517
https://doi.org/10.1002/cite.330680517
Autor:
Harro Lentz
Publikováno v:
Nachrichten aus der Chemie. 54:650-650
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a29787f364532b72a21ee674bb787858
https://doi.org/10.1002/nadc.20060540609
https://doi.org/10.1002/nadc.20060540609