meso-Erythritol CAS 149-32-6 Assay 99.5 ~ 100.5% Factory Food Additive

TANTHAUZO
Erythritol imapezeka mwa nayonso mphamvu ya wowuma enzyme hydrolyzate (kuchokera ku zowuma monga tirigu ndi chimanga).Amachokera ku fermentation msuzi wa yisiti yoyenera ya osmophilic monga Moniliella pollinis kapena Trichosporonoides megachiliensis.Lili ndi NLT 96.0% ndi NMT 102.0% ya Erythritol (C4H10O4), yowerengedwa pamaziko a anhydrous.
CHIZINDIKIRO
• A. KUYAMBIRA KWA INFRARED <197K>
• B. KUSINKHA KAPENA KUCHEPIRIRA <741>: 119.0~123.0°C
ZOYESA
• NTCHITO
Gawo la mafoni: 0.01% sulfuric acid
Njira yothetsera kuyenerera: 0.05 mg/mL iliyonse ya USP Erythritol RS ndi glycerol
Njira yothetsera: 50 mg/mL ya USP Erythritol RS
Yankho lachitsanzo: 50 mg/mL ya Erythritol
Chromatographic system
(Onani Chromatography <621>, Kukwanira Kwadongosolo.)
Njira: LC
Detector: Refractive index
Mzere: 7.8-mm × 30-cm;kunyamula L17
Kutentha kwapakati: 70 °
Kuthamanga: 0.8 mL / min
Kukula kwa jakisoni: 10 µL
Kuyenerera kwadongosolo
Zitsanzo: Njira yothetsera kuyenerera kwa kachitidwe ndi njira yokhazikika [Dziwani-Nthawi zosungirako erythritol ndi glycerol ndi pafupifupi 1.0 ndi 1.1, motsatana.]
Zofunikira zoyenera
Kusamvana: NLT 2.0 pakati pa erythritol ndi glycerol, Kuyenerera kwa dongosolo
Kupatuka kofananira: NMT 2.0%, njira yokhazikika
Kusanthula
Zitsanzo: yankho lokhazikika ndi yankho lachitsanzo [Dziwani—Lembetsani ma chromatogram kwa nthawi yopitilira katatu kuposa nthawi yosungira erythritol.]
Werezerani mu kuchuluka kwa erythritol (C4H10O4) mu gawo la Erythritol lomwe watengedwa:
Zotsatira = (rU/rS) × (CS/CU) × 100
rU = kuyankha kwapamwamba kuchokera ku Sample solution
rS = kuyankha kwakukulu kuchokera ku Standard solution
CS = kuchuluka kwa USP Erythritol RS mu Standard solution (mg/mL)
CU = kuchuluka kwa Erythritol mu Sample solution (mg/mL)
Njira zolandirira: 96.0% -102.0% pamaziko a anhydrous
ZOCHITSA
• ZOSALA PA ZOYAMBITSA <281>: NMT 0.1%
• MALIRE A Mtsogoleri
Yankho lotsogola lokhazikika: Konzekerani monga momwe mwalangizidwira pansi pa Heavy Metals <231>, Special Reagents
Yankho lachitsanzo: Sungunulani 20.0 g wa Erythritol mu acetic acid wosungunuka, ndi kusungunula ndi sing'anga yomweyo mpaka 100 ml.Onjezerani 2.0 mL ya saturated ammonium pyrrolidinedithiocarbamate solution (10 mg/mL ya ammonium pyrrolidinedithiocarbamate) ndi 10.0 mL ya methyl isobutyl ketone, ndipo gwedezani kwa 30 s.Tetezani ku kuwala kowala.Lolani zigawo ziwirizo kuti zilekanitse, ndipo gwiritsani ntchito methyl isobutyl ketone layer.
Mayankho anthawi zonse: Konzekerani molingana ndi malangizo a Zitsanzo za yankho, kupatula konzani njira zitatu powonjezera 0.5, 1.0, ndi 1.5 mL ya Standard lead solution kuwonjezera pa 20.0 g ya Erythritol.
Yankho lopanda kanthu: Konzekerani monga mwalangizidwa yankho lachitsanzo, kusiya Erythritol.
Zida zoimbira
(Onani Spectrophotometry ndi Kuwala-Kuwala <851>.)
Mawonekedwe: Atomic mayamwidwe spectrophotometry, pogwiritsa ntchito methyisobutyl ketone m'mbuyomo monga tafotokozera pansi Chitsanzo yankho, koma popanda chitsanzo anawonjezera.
Kutalika kwa mafunde: 283.3 nm
Nyali: Lead hollow-cathode
Lawi lamoto: Air-acetylene
Kusanthula
Zitsanzo: Yankho lachitsanzo ndi mayankho Okhazikika
Yambitsani njira ya Zitsanzo ndi iliyonse mwa njira zitatu za Standard mu chida.Jambulani kuwerengera kokhazikika.Konzani zowerengera za kuyamwa motsutsana ndi zomwe zimadziwika za lead (mu µg), ndipo jambulani mzere wowongoka.Onjezani mzerewo mpaka utakumana ndi ndende yozungulira, yomwe ili yofanana ndi ndende, mu ppm, ya lead mu zitsanzo.
Njira zolandirira: NMT 0.5 ppm
• ZINTHU ZOKHUDZANA NAZO
Mobile phase, System suitability solution, Standard solution, ndi Sample solution: Pitirizani monga mwanenera mu Assay.
Yankho lokhazikika: Chotsani 2.0 mL ya Standard solution kuchokera ku Assay kupita ku botolo la volumetric 100-mL, ndi kusungunula ndi madzi (1 mg/mL ya erythritol).
Chromatographic system: Pitirizani monga mwauzira mu Assay kupatula kugwiritsa ntchito jekeseni wa 20 µL.
Kusanthula
Zitsanzo: Yankho lachitsanzo ndi yankho lokhazikika
Werezerani kuchuluka kwa zonyansa zilizonse zomwe zapezeka:
Zotsatira = (rU/rS) × (CS/CU) × 100
rU = kuyankha kwapamwamba kuchokera ku Sample solution
rS = kuyankha kwakukulu kwa erythritol kuchokera ku Standard solution
CS = kuchuluka kwa USP Erythritol RS mu Standard solution (mg/mL)
CU = kuchuluka kwa Erythritol mu Sample solution (mg/mL)
Zovomerezeka zovomerezeka
Zonyansa zapayekha: NMT 2.0%
Zonyansa zonse: NMT 2.0%
MAYESO AKE
• MAYESERO A MICROBIAL ENUMERATION <61> ndi KUYESA KWA ZOFUNIKA
MICROORGANISMS <62>: Chiwerengero chonse cha ma aerobic microbial pogwiritsa ntchito Plate Method ndi NMT 1000 cfu/g, ndipo kuchuluka kwa nkhungu ndi yisiti ndi NMT 100 cfu/g.Imakwaniritsa zofunikira pakuyesa kusakhalapo kwa mitundu ya Salmonella ndi Escherichia coli.
• KUTAYEKA PA KUYANUKA <731>: Yanikani chitsanzo cha 8-g pa 105° kwa 4 h: imataya NMT 0.2% ya kulemera kwake.
• KUSINTHA KWA MADZI, Njira I <921>: NMT 0.5%
• MAKHALIDWE
Njira yothetsera: 200 mg/mL m'madzi
Kusanthula: Pogwiritsa ntchito mita yoyezera, sankhani cell conductivity yomwe ili yoyenera kuti muwunikenso momwe yankho likuyendera.Gwiritsani ntchito cholembera chovomerezeka, mwachitsanzo, yankho la potaziyamu chloride, lomwe ndi loyenera muyeso.Mtengo wa conductivity wa zinthu zovomerezeka uyenera kukhala pafupi ndi mtengo womwe ukuyembekezeredwa wa yankho loti liwunikenso.Pambuyo poyesa chipangizocho ndi njira yovomerezeka, yambani ma conductivity cell kangapo ndi madzi komanso kawiri ndi madzi amadzimadzi kuti muwunike.Yezerani momwe yankho likuyendera pa kutentha kwa 20 ° ndikuyambitsa mofatsa ndi maginito oyambitsa.
Zoyenera kulandira: NMT 20 µS/cm
ZOWONJEZERA ZOFUNIKA
• KUPAKA NDI KAKHALIDWE: Sungani m’zotengera zotsekedwa bwino.Sungani kutentha.
• MFUNDO ZA USP REFERENCE <11>
USP Erythritol RS