1. Yakananga kuburitsa nzira

Xylitol yakatanga kuparadzaniswa kubva pamakwati emiti yemuouki nemusayendisiti weGermany Hermann Emil Fischer muna 1890. Xylitol inowanzoitika mumiti-based raw materials muzvisikwa, zvakadai semastrawberries, yellow plums, cauliflower, nemimwe michero nemiriwo (300-935 mg / 100 g yakaoma uremu). Solvent kuburitsa inogona kushandiswa kuburitsa zvakananga xylitol kubva kumiti-yakavakirwa zvinhu, asi zvirimo mu xylitol zvakaderera muzvirimwa-based zvinhu zvakaita semichero nemiriwo. Kunyangwe zvirimo mu xylitol muapricot plums zvakakwirira kupfuura zvimwe zvinomera-based, uye zvirimo mu xylitol mugirini plums zvinotora 1% yehuremu hwakaoma, kuburitsa xylitol kubva mazviri kunoda hunyanzvi hwekushandisa, inoshandisa simba rakakura, uye ine mutengo wakakura wekugadzira.

2. Chemical synthesis nzira

Mumakore ekuma1970, Finland ndiyo yakatanga kushandisa chromatography kupatsanura D-xylose kubva kune dzakasiyana siyana dzehuni hemicelluloses. Zvadaro, D-xylose yakaderedzwa kuita xylitol pasi pekupisa kwakanyanya, kudzvanywa kwakanyanya, uye hydrogen catalysis, uye yakagadziridzwa kuita indasitiri yekugadzira xylitol nzira.

Xylitol inogona kudzikiswa zvakananga kuita yakachena D-xylose kuburikidza nemakemikari synthesis, kana kugadzirwa kubva kune lignocellulosic biomass yakapfuma muxylose. Kugadzirwa kwexylitol munyika nekune dzimwe nyika kunowanzo shandisa zvinhu zvakapfuma mupentose polysaccharides, senge huswa hwegorosi chaihwo, gorosi, chitofu chechibage, muguri wechibage, nezvimwewo, izvo zvinogadzirwa neacid hydrolysis (yakadai seHCI, HSO), yobva yacheneswa kubva muzvikamu zvehemicellulose. Pasi pechiito checatalyst, iyo xylose inopinda hydrogenation reaction.

3. Biological shanduko nzira

Nzira yebiotechnology inosanganisira hydrolysis yemarara ekurima ane pentose shuga (senge chibage cobs, bagasse, uye olive pomace) ine dilute acid kuti iwane xylose hydrolysate, iyo inozoderedzwa kuita xylitol netupukanana. Kushandiswa kwemicrobial fermentation yehemicellulose hydrolyzate kugadzira xylitol kune zvakanakira mamiriro ekuita zvinyoro, kushanda kuri nyore, kushamwaridzana kwezvakatipoteredza, kusvibiswa kwakaderera, uye kunaka kwechigadzirwa, zvichiita kuti ive imwe nzira inodhura yekuwana iyi polyol.

Maitiro ekugadzira xylitol akareba, asi akati wandei akakosha maitiro anofanirwa kubatwa kuti ive nechokwadi chemhando yezvigadzirwa zve xylitol uye kufambira mberi kwakanaka kwekugadzirwa. Izvi zvinozivikanwa senzira yekubatana. Kana matanho akati wandei apera, mapoinzi akakosha ekugadzirwa kwexylitol anobatwa.

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