PL38245B1 - - Google Patents
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- PL38245B1 PL38245B1 PL38245A PL3824554A PL38245B1 PL 38245 B1 PL38245 B1 PL 38245B1 PL 38245 A PL38245 A PL 38245A PL 3824554 A PL3824554 A PL 3824554A PL 38245 B1 PL38245 B1 PL 38245B1
- Authority
- PL
- Poland
- Prior art keywords
- tube
- burette
- solution
- stand
- steam
- Prior art date
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- 235000000346 sugar Nutrition 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 3
- 238000004448 titration Methods 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 2
- 150000008163 sugars Chemical class 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
Description
RZECZYPOSPOLITEJ LUDOWEJ OPIS PATENTOWY Nr38245 KL 42 1, 3/02 Glówny Instytut Przemyslu Rolnego i Spozywczego *) Warszawa, Polska Aparat do oznaczania ilosciowego substancji redukujacych w roztworach, zwlaszcza cukrów redukujacych Patent trwa od dnia 25 sierpnia 1954 r.Znany jest sposób oznaczania strat cukru w brzeczce drozdzowej po odwirowaniu drozdzy, polegajacy na miareczkowaniu roztworu alkalicz- no-miedziowego o znanym mianie roztworem cukru redukujacego wobec blekitu metylenowego.Miareczkowanie to przeprowadza sie w tempera¬ turze okolo 98° C bez dostepu, powietrza, w apa¬ ratach szklanych tzw. ebuliostatach. Aparaty te maja stosunkowo zlozona budowe, a wiec sa dosc kosztowne. Aparat stanowiacy przedmiot wynalaz¬ ku niniejszego odznacza sie prostota budowy i moze byc z latwoscia wykonany w kazdym laboratorium.Na rysunku przedstawiono aparat w widoku z boku. Aparat ten sklada sie ze stojaka 1, zaopa¬ trzonego w znane zaciski 2, za pomoca których *) Wlasciciel patentu oswiadczyl, ze twórca wynalazku jest inz. mgr Stanislaw Soczynski. umocowuje sie biurete 3 i probówke 4, zamyka¬ na korkiem 5. W korku tym sa przewiercone trzy otwory, przez które przechodzi rurka szklana 6, siegajaca dna probówki, rurka wylotowa 8 biurety 3 i rurka odlotowa 7 do pary wodnej, doprowa¬ dzanej przez rurke 6 do roztworu alkaliczno-mie- dziowego o znanym mianie, zawierajacego jako wskaznik blekit metylenowy.Po dokonanym miareczkowaniu odejmuje sie probówke 4 w celu napelnienia jej swieza porcja roztworu miedziowego.Jak wynika z powyzszego, aparat ten mozna wykonac w kazdym laboratorium, przez co w la- zie stluczenia moze byc z latwoscia zrekonstruo¬ wany srodkami, jakimi rozporzadza laboratorium.Poniewaz opisany na wstepie sposób oznaczania substancji redukujacych mozna stosowac, jak stwierdzono, z powodzeniem np. w cukrownictwie, wiec i aparat opisany powyzej winien znalezc sze-roki-e zastosowanie ze wzgledu na swa prostoie i latwosc wykonania. PLREPUBLIC OF PEOPLE PATENT DESCRIPTION No. 38245 KL 42 1, 3/02 Central Institute of Agricultural and Food Industry *) Warsaw, Poland Apparatus for quantitative determination of reducing substances in solutions, especially reducing sugars Patent valid from August 25, 1954 The method of determining sugar losses is known in yeast broth after yeast centrifugation, consisting in titration of an alkaline-copper solution of known titre with a reducing sugar solution against methylene blue. ebulliostats. These cameras are relatively complex in construction, and therefore are quite expensive. The apparatus of the present invention is simple in construction and can be easily made in any laboratory. The figure shows the side view of the apparatus. This apparatus consists of a stand 1 provided with known clamps 2, with the help of which *) The owner of the patent declared that the inventor is Stanislaw Soczynski, MSc. The burette 3 and the test tube 4 are fixed, closed with a stopper 5. The stopper has three holes through which the glass tube 6 reaches the bottom of the tube, the outlet tube 8 of the burette 3 and the outlet tube 7 for the steam supplied by tube 6 for an alkaline-copper solution with a known titer, containing a methylene block as indicator. After the titration, the tube 4 is subtracted to fill it with a fresh portion of the copper solution. in the concussion, it can be easily reconstructed with the measures prescribed by the laboratory. Because the method of determining reducing substances described in the introduction can be used successfully, for example, in sugar industry, so the apparatus described above should find a wide range of that it is used due to its simple and easy execution. PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL38245B1 true PL38245B1 (en) | 1955-02-15 |
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