Kev hloov piam thaj hloov pauv tsis tau tso tseg. Tshaj li ntawm ib puas xyoo, cov khoom qab zib hloov pauv tau dhau mus rau qhov kev hloov pauv thiab tau maj mam hloov los ntawm cov piam thaj hloov pauv. Raws li ntev - tsim cov hnub qub muaj nyob rau hauv cov khoom qab zib ntuj hloov, qhov kev thov rau steviol glycosides tseem loj tuaj. Dej haus tseem yog qeb tseem ceeb uas siv steviol glycosides. Tsis tas li ntawd, muaj kev loj hlob tseem ceeb hauv cov khoom noj khoom haus kis las, khoom noj siv mis, khoom noj txom ncauj, thiab khoom qab zib. Cov qeb tshiab xws li khoom qab zib, ice cream, thiab cov khoom ci kuj tau maj mam pib.
Steviol Glycosides: Lub Ntuj Zero- Calorie Healthy Sugar Source
Steviol glycosides yog ib chav kawm ntawm cov khoom qab zib uas tau muab rho tawm los ntawm Stevia, hailed raws li lub ntiaj teb "thib peb- tiam ntuj zero-calorie noj qab haus huv qhov chaw." Stevia yog ib tsob ntoo muaj xyoob ntoo hauv tsev neeg Asteraceae, keeb kwm los ntawm Paraguay, Brazil, thiab Argentina. Tau ntau pua xyoo, cov neeg hauv zos tau siv Stevia nplooj rau tshuaj kho mob thiab ua kom qab zib, xws li tshuaj yej mate.
Tom qab saj thiab tsis kaj siab residual saj ntawm steviol glycoside Reb A tau txwv lawv daim ntawv thov. Hauv kev sib piv, steviol glycosides Reb D thiabReb Mtau txais kev saib xyuas vim lawv saj zoo thiab suav tias yog pawg tseem ceeb ntawm cov tiam tom ntej ntawm steviol glycosides.
Kev tsim cov txheej txheem ntawm Steviol Glycoside Reb D
Txij li thaum cov ntsiab lus ntawm steviol glycoside Reb D nyob rau hauv stevia yog tsawg heev thiab kev lag luam ntau lawm nyuaj, cov kws tshawb fawb tseem niaj hnub sim ntau txoj hauv kev los ua kom cov qoob loo ntawm steviol glycoside Reb D. Tam sim no, muaj peb lub ntsiab ntau lawm technologies: kev yug me nyuam txoj kev, bioconversion txoj kev, thiab fermentation txoj kev. Hauv ob qho tib si bioconversion thiab fermentation txoj kev, cov enzymes los yog cov kab mob uas siv tau raug tshem tawm ntawm cov khoom kawg, tawm hauv purified steviol glycosides.
Txoj kev yug me nyuam koom nrog kev cog qoob loo Stevia ntau yam nrog cov ntsiab lus siab Reb D thiab yog ib txoj hauv kev zoo dua qub; Txawm li cas los xij, txoj kev no yuav tsum tau sim ntau lub sijhawm thiab ua yuam kev.
Txoj kev bioconversion siv cov enzymes tshwj xeeb los hloov cov rho tawmReb Alos yog stevioside los ntawm Stevia rau hauv lub hom phiaj steviol glycosides xws li Reb D lossis lwm yam tshwj xeeb glycosides. Cov enzymes tau muab los ntawm cov kab mob hloov pauv caj ces, feem ntau tsis yog -toxigenic thiab tsis yog - kab mob ntawm Pichia pastoris thiab Escherichia coli. Cov kab mob hloov pauv no tuaj yeem tsim cov enzymes xws li glucosyltransferase thiab sucrose synthase.
Kev tsim cov fermentation suav nrog kev siv cov poov xab (feem ntau hloov kho cov kab mob kab mob) kom ferment qab zib rau hauv lub hom phiajsteviol glycosides, xws li steviol glycoside Reb D lossis lwm yam glycosides tshwj xeeb. Fermented steviol glycosides muaj lub zog tshiab thiab qab zib -zoo li saj, uas pab cov zaub mov thiab dej haus txo cov ntsiab lus qab zib thaum tswj qhov qub saj.
