NO130158B - - Google Patents

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Publication number
NO130158B
NO130158B NO00147088A NO14708863A NO130158B NO 130158 B NO130158 B NO 130158B NO 00147088 A NO00147088 A NO 00147088A NO 14708863 A NO14708863 A NO 14708863A NO 130158 B NO130158 B NO 130158B
Authority
NO
Norway
Prior art keywords
cloth
felt
liquid
roller
nip
Prior art date
Application number
NO00147088A
Other languages
Norwegian (no)
Inventor
P Wrist
C Schiel
Original Assignee
Mead Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mead Corp filed Critical Mead Corp
Publication of NO130158B publication Critical patent/NO130158B/no

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Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00Press section of machines for making continuous webs of paper
    • D21F3/02Wet presses
    • D21F3/029Wet presses using special water-receiving belts
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/0027Screen-cloths
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00Press section of machines for making continuous webs of paper
    • D21F3/02Wet presses
    • D21F3/0281Wet presses in combination with a dryer roll
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00Paper making and fiber liberation
    • Y10S162/07Water collectors, e.g. save-alls

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
  • Saccharide Compounds (AREA)

Description

Fremgangsmåte til utvinning av kanamycin B. Method for the extraction of kanamycin B.

Antibiotikumet kanamycin fremstilles The antibiotic kanamycin is produced

på biologisk måte ved dyrkning under an-vendelse av en stamme Streptomyces kanamyceticus. Det er nå funnet at antibiotikumet er en blanding av to kanamycin-komponenter. Disse komponenter betegnes med A og B. in a biological manner by cultivation using a strain Streptomyces kanamyceticus. It has now been found that the antibiotic is a mixture of two kanamycin components. These components are denoted by A and B.

Komponenten A overveier som regel i Component A usually outweighs i

de normale næringsoppløsninger. Et nøy-aktig forhold av mengden av A og B kan ikke angis, da dette forhold varierer med hensyn til de levende cellers stoffskifte på uoversiktbar måte. Slike variasjoner har imidlertid innvirkning på de arbeidsmåter som er rettet på isolering av de forskjel-lige komponenter fra blandingen. the normal nutrient solutions. An exact ratio of the amount of A and B cannot be stated, as this ratio varies with regard to the metabolism of the living cells in an unpredictable manner. However, such variations have an impact on the working methods which are aimed at isolating the various components from the mixture.

Imidlertid krever komponenten B på However, component B requires

grunn av visse egenskaper, særlig på grunn av lavere giftighet, særlig interesse. Man må for isolering av de enkelte komponenter underkaste blandingen en adskillelses-behandling. For dette formål kan man an-vende prinsippet motstrømsfordeling eller arbeide med ioneutveksling. due to certain properties, especially due to lower toxicity, particular interest. In order to isolate the individual components, the mixture must be subjected to a separation treatment. For this purpose, one can use the principle of countercurrent distribution or work with ion exchange.

Disse metoder krever imidlertid for det However, these methods require it

første en meget subtil arbeidsmåte, og på den annen side har de den ulempe at det kreves en rekke trinn for å oppnå en uklan-derlig adskillelse. Den tid som går med til dette er derfor meget lang. firstly, a very subtle way of working, and on the other hand, they have the disadvantage that a number of steps are required to achieve an impeccable separation. The time required for this is therefore very long.

Formålet med oppfinnelsen er å unngå The purpose of the invention is to avoid

disse ulemper, og er rettet på å fremskaffe en enkel fremgangsmåte som gjør det mu- these disadvantages, and is aimed at providing a simple method that makes it mu-

lig å skille fra en av komponentene, nemlig komponent B, ved at den felles ut fra blandingen. Ifølge oppfinnelsen karakteriseres denne skillemetode ved at man til en vandig oppløsning tilsetter natriumdodecyl-benzensulfonat, løser opp fellingen av kanamycin B-dodecylbenzensulfonat i metanol og feller ut ved tilsetning av syre, fortrinsvis svovelsyre, det tilsvarende kanamycin B-salt og skiller dette fra. can be separated from one of the components, namely component B, by separating it from the mixture. According to the invention, this separation method is characterized by adding sodium dodecylbenzenesulfonate to an aqueous solution, dissolving the precipitate of kanamycin B dodecylbenzenesulfonate in methanol and precipitating by adding acid, preferably sulfuric acid, the corresponding kanamycin B salt and separating this.

De to komponentene, altså kanamycin A og kanamycin B, er begge vannoppløse-lige stoffer som imidlertid er uoppløselig i n-butanol, etylacetat, butylacetat, eter, kloroform og benzen. The two components, i.e. kanamycin A and kanamycin B, are both water-soluble substances which, however, are insoluble in n-butanol, ethyl acetate, butyl acetate, ether, chloroform and benzene.

Kanamycin A-basen har den empiriske formel The Kanamycin A base has the empirical formula

C18H:M-:S(iN4011> C18H:M-:S(iN4011>

har en spesifikk dreining [a] <2>D<*> lik —146° has a specific rotation [a] <2>D<*> equal to —146°

(c=l 0,1NH2SO,) danner et salicylidenderivat som smelter ved 272 til 274° C under spaltning, gir desoksystreptamin ved sterk, sur hydrolyse, gir et produkt med ultrafiolett absorpsjonsspektrum svarende til absorpsjonsspekteret hos furfural ved behandling med 40 pst. svovelsyre i 100 minutter ved 100° C og har ytterligere karakteristisk absorpsjonsbånd i den infra-røde del av spekteret, når det foreligger i form av den frie base i kaliumbromid ved følgende bølgelengder (uttrykt i mikron): (c=l 0.1NH2SO,) forms a salicylidene derivative which melts at 272 to 274° C during decomposition, gives desoxystreptamine on strong, acid hydrolysis, gives a product with an ultraviolet absorption spectrum corresponding to the absorption spectrum of furfural on treatment with 40 per cent sulfuric acid in 100 minutes at 100° C and has an additional characteristic absorption band in the infrared part of the spectrum, when present in the form of the free base in potassium bromide at the following wavelengths (expressed in microns):

Kanamycin B har i form av den frie base en spesifikk dreining [a]n på 135° (c = 0.63 i vann), gir et salicylidenderivat som spaltes ved 255 til 265° C, uten å smelte, viser intet ultrafiolett absorpsjonsspektrum tilsvarende det for furfural ved behandling med 40 pst. svovelsyre ved 100° C og viser ytterligere karakteristisk absorpsjonsbånd i den infrarøde del av spekteret, når det foreligger i form av den frie base i kaliumbromid ved følgende bølge-lengder (i mikron): 3.44, 6.74, 8.28, 8.76, 9.55 og 11.15. Kanamycin B in the form of the free base has a specific rotation [a]n of 135° (c = 0.63 in water), gives a salicylidene derivative which decomposes at 255 to 265° C, without melting, shows no ultraviolet absorption spectrum corresponding to that of furfural when treated with 40% sulfuric acid at 100° C and shows a further characteristic absorption band in the infrared part of the spectrum, when it exists in the form of the free base in potassium bromide at the following wavelengths (in microns): 3.44, 6.74, 8.28 , 8.76, 9.55 and 11.15.

Til forklaring av oppfinnelsen tjener det følgende eksempel: 50 g fast kanamycin (456 enheter/mg ved biologisk prøve, 131 enheter/mg ved ultrafiolett-furfural-prøve, middel på 0.287 for begge prøver) ble oppløst ved pH 6 i 2 1 vann og 60 g natriumdodecylbenzolsulfat tilsettes. Fellingen ble samlet opp, vasket med vann og løst opp i metanol; metanol- oppløsningen ble surgjort med svovelsyre, for å felle ut renset kanamycin-B-sulfat. Etter gjentagelse av fremgangsmåten ble 9.5 g fast kanamycin-B-sulfat (630 enhe-ter/mg ved biologisk prøve; 51 enheter/mg ved furfural-ultrafiolett-prøve, forhold 0.081) oppnådd. The following example serves to explain the invention: 50 g of solid kanamycin (456 units/mg in the biological test, 131 units/mg in the ultraviolet-furfural test, average of 0.287 for both tests) was dissolved at pH 6 in 2 1 water and 60 g of sodium dodecylbenzene sulphate are added. The precipitate was collected, washed with water and dissolved in methanol; methanol the solution was acidified with sulfuric acid to precipitate purified kanamycin B sulfate. After repeating the procedure, 9.5 g of solid kanamycin B-sulphate (630 units/mg by biological test; 51 units/mg by furfural-ultraviolet test, ratio 0.081) were obtained.

Kanamycin-B-basen spaltes ved en betraktelig lavere temperatur enn kanamycin-A-basen. Således blir kanamycin-B-basen mørkfarvet ved 170° C og danner en mørk, gummiaktig substans ved tørk-ning ved kokepunktet for cymen (176° C). Kanamycin-B-basen viste [a],, —135° The kanamycin B base is cleaved at a considerably lower temperature than the kanamycin A base. Thus, the kanamycin B base becomes dark colored at 170° C. and forms a dark, gummy substance when dried at the boiling point of cymene (176° C.). The kanamycin B base showed [a],, —135°

(c = 0.63 i vann) og ga ved analyse 44.69 pst. C, 7.48 pst. H og 12.65, 13.62 pst. ni-trogen etter korrektur for 10.3 pst. vekttap ved tørking av en prøve ved 100° C. (c = 0.63 in water) and gave by analysis 44.69 per cent C, 7.48 per cent H and 12.65, 13.62 per cent nitrogen after correction for 10.3 per cent weight loss when drying a sample at 100° C.

Bølgelengdene (mikron) for de karak-teristiske inf rarøde-absorpsj onsmaksima for kanamycin-B-basen er de følgende: The wavelengths (microns) of the characteristic infrared absorption maxima for the kanamycin B base are as follows:

For målingen ble kanamycin-B-basen presset til kaliumbromid, og disse tørket 15 timer i vakuum ved 137° C. For the measurement, the kanamycin B base was pressed into potassium bromide, and these were dried for 15 hours in a vacuum at 137°C.

Fremgangsmåte til utvinning av kanamycin B fra en blanding av kanamyciner erholdt ved dyrkning av en stamme av Streptomyces kanamyceticus i en nitro-genholdig carbonhydratnæringsoppløsning under submerse, aerobe betingelser, karakterisert ved at det til en vandig kanamycinholdig oppløsning settes natri-umdodecylbenzensulf onat, hvoretter bunn-fallet bestående av kanamycin B-dodecylbenzensulfonat samles opp, løses opp i metanol og etter tilsetning av syre, fortrinsvis svovelsyre, utvinnes i form av et salt av kanamycin B. Process for extracting kanamycin B from a mixture of kanamycins obtained by growing a strain of Streptomyces kanamyceticus in a nitrogen-containing carbohydrate nutrient solution under submerged, aerobic conditions, characterized in that sodium dodecylbenzene sulfonate is added to an aqueous kanamycin-containing solution, after which bottom- the precipitate consisting of kanamycin B-dodecylbenzenesulfonate is collected, dissolved in methanol and, after addition of acid, preferably sulfuric acid, recovered in the form of a salt of kanamycin B.

Claims (3)

1. Fremgangsmåte til å avvanne en løpende bane av papir eller lignende ved at banen føres gjennom minst ett pressenipp mellom glattvalser båret av en filt av væskeoverførende materiale og sammen med en væskegjennomslippelig og relativt ukomprimerbar duk som løper mellom den ene pressvalse og filten og i direkte kontakt med valsen, slik at væsken av pressetrykket drives fra banen gjennom filten og inn i duken og hvorved duken og filten og fortrinnsvis papirbanen og filten skilles fra hverandre umiddelbart etter å ha passert nippet, karakterisert ved at duken (20, 43, 68, 98, 108, 148, 167) etter passasjen gjennom nippet holdes i kontakt med valsens overflate over en slik strekning og at den anvendte duk er væskegjennomslippelig i en slik grad? at det vesentlige av dukens opptatte væske overføres til valsens overflate. 1. Method for dewatering a running web of paper or the like by passing the web through at least one press nip between smooth rollers carried by a felt of liquid-transferring material and together with a liquid-permeable and relatively incompressible cloth that runs between the one press roller and the felt and in direct contact with the roller, so that the liquid of the press pressure is driven from the web through the felt into the cloth and whereby the cloth and the felt and preferably the paper web and the felt are separated from each other immediately after passing the nip, characterized in that the cloth (20, 43, 68, 98 , 108, 148, 167) after the passage through the nip is kept in contact with the surface of the roller over such a stretch and that the cloth used is permeable to liquids to such an extent? that most of the liquid absorbed by the cloth is transferred to the surface of the roller. 2. Innretning til avvanning av en løpende bane av papir2. Device for dewatering a continuous web of paper eller lignende ifølge fremgangsmåten i krav 1, og innbefattende minst ett pressenipp mellom glattvalser (11, 12), en filt (13) av væske-overførende materiale, en duk (20) som er væskegjennomslippelig og relativt ukomprimerbar, hvilken filt og duk går gjennom pressenippet, og en anordning (15, 22) for skilling av filt og duk etter passeringen av nippet, karakterisert ved en anordning (22) for holding av duken (20) i kontakt med valsens (12) overflate over en strekning etter pressenippet, og ved en anordning (27-29) for fjerning av væske fra den nevnte valses (12) overflate. or the like according to the method in claim 1, and including at least one press nip between smooth rollers (11, 12), a felt (13) of liquid-transferring material, a cloth (20) which is liquid-permeable and relatively incompressible, which felt and cloth pass through press tip, and a device (15, 22) for separating felt and cloth after the passage of the nip, characterized by a device (22) for holding the cloth (20) in contact with the surface of the roller (12) over a stretch after the press nip, and by a device (27-29) for removing liquid from the surface of said roller (12). 3. Innretning ifølge krav-2, karakterisert ved at duken (20) består av en vevnad av syntetisk harpiks med jevn porøsitet for gjennornslipping av væsken.3. Device according to claim 2, characterized in that the cloth (20) consists of a weave of synthetic resin with uniform porosity for recirculation of the liquid.
NO00147088A 1962-02-13 1963-01-11 NO130158B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US173005A US3257268A (en) 1962-02-13 1962-02-13 Paper pressing process and apparatus utilizing water receiving belt

Publications (1)

Publication Number Publication Date
NO130158B true NO130158B (en) 1974-07-15

Family

ID=22630105

Family Applications (1)

Application Number Title Priority Date Filing Date
NO00147088A NO130158B (en) 1962-02-13 1963-01-11

Country Status (9)

Country Link
US (1) US3257268A (en)
AT (1) AT265844B (en)
CH (1) CH406828A (en)
DE (1) DE1411905A1 (en)
DK (1) DK125176B (en)
FI (1) FI46277C (en)
GB (1) GB985114A (en)
NO (1) NO130158B (en)
SE (1) SE325474B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3528881A (en) * 1966-03-07 1970-09-15 Beloit Corp Felt pickup arrangement for paper sheet formed on a papermaking machine wire
AT351354B (en) * 1978-02-10 1979-07-25 Andritz Ag Maschf DEVICE FOR DEWATERING OF FIBER WALLS
US4425842A (en) 1981-05-01 1984-01-17 Cotton Incorporated High expression squeeze roll liquor extraction of nonwoven batts
US4434633A (en) 1981-05-01 1984-03-06 Cotton Incorporated High expression squeeze roll liquor extraction of nonwoven batts
SE455316B (en) * 1985-12-09 1988-07-04 Nordiskafilt Ab PROCEDURE AND DEVICE FOR PRESSURE PRESSURE IN PRESSURE PART FOR PAPER MACHINES
US4888096A (en) * 1987-12-02 1989-12-19 Inotech Process Ltd. Roll press for removing water from a web of paper using solid grooved roll and compressed air
US5897745A (en) * 1994-06-29 1999-04-27 The Procter & Gamble Company Method of wet pressing tissue paper
DE19507374C2 (en) * 1995-03-03 1997-01-09 Voith Sulzer Papiermasch Gmbh Dryer section
US5961735A (en) * 1995-06-21 1999-10-05 North Carolina State University Method of cleaning papermaking felts with enzymes
US6103062A (en) * 1998-10-01 2000-08-15 The Procter & Gamble Company Method of wet pressing tissue paper
DE10158456A1 (en) * 2001-11-28 2003-06-18 Voith Paper Patent Gmbh press felt
CN114750265B (en) * 2022-04-12 2024-03-19 哈尔滨工业大学(深圳) Ceramic rolling device and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA472924A (en) * 1951-04-17 Beloit Iron Works Fluid pressure controlled roll assemblies
CA586264A (en) * 1959-11-03 Beloit Iron Works Paper machine dryer
US1600509A (en) * 1923-01-08 1926-09-21 Paper & Textile Machinery Co Paper-machine press
DE527130C (en) * 1930-03-12 1931-06-13 Otto Guenther Papierfabrik Process for producing paper that is smooth on one or two sides
US2618205A (en) * 1946-07-22 1952-11-18 Beloit Iron Works Papermaking machine
US2672078A (en) * 1950-04-05 1954-03-16 Beloit Iron Works Suction press assembly
US2869437A (en) * 1955-09-15 1959-01-20 Beloit Iron Works Paper machine press section
FR1198432A (en) * 1957-07-17 1959-12-07 Stiftelsen Pappersbrukens Fors Dehydration of pasta webs such as pulp webs or the like
US3093535A (en) * 1958-07-14 1963-06-11 Stiftelsen Pappersbrukens Fors Method of dewatering pulp webs

Also Published As

Publication number Publication date
AT265844B (en) 1968-10-25
FI46277B (en) 1972-10-31
DE1411905A1 (en) 1969-11-27
US3257268A (en) 1966-06-21
DK125176B (en) 1973-01-08
CH406828A (en) 1966-01-31
FI46277C (en) 1973-02-12
SE325474B (en) 1970-06-29
GB985114A (en) 1965-03-03

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