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Literature summary for 3.2.1.23 extracted from

  • Crueger, A.; Crueger, W.
    Carbohydrates (1984), Biotechnology (Kieslich, K. , ed. ) Verlag Chemie, Weinheim, 6A, 421-457.
No PubMed abstract available

Application

Application Comment Organism
nutrition
-
Aspergillus oryzae
nutrition hydrolysis of whey ultrafiltrate from continous production of ethanol with Kluyveromyces sp. yields a sweet syrup which can be used as sweetener Kluyveromyces sp.
nutrition production of a sweetener for food industry by hydrolysis of lactose in permeate whey Saccharomyces cerevisiae
nutrition lactase entrapped in cellulose-triacetate fibers is originally used to produce low lactose milk Kluyveromyces lactis
nutrition conversion of cheese whey into a sweet protein-rich syrup which can be used in baked goods and ice cream Aspergillus niger

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
12 17 lactose
-
Kluyveromyces lactis
14
-
lactose
-
Kluyveromyces marxianus
50
-
lactose
-
Weizmannia coagulans
50
-
lactose
-
Aspergillus oryzae
85
-
lactose
-
Aspergillus niger
85
-
lactose
-
Aspergillus oryzae

Organism

Organism UniProt Comment Textmining
Aspergillus niger
-
-
-
Aspergillus oryzae
-
-
-
Caldariella acidophila
-
-
-
Curvularia inaequalis
-
-
-
Escherichia coli
-
-
-
Fusarium verticillioides
-
-
-
Geobacillus stearothermophilus
-
-
-
Geobacillus stearothermophilus HRI
-
-
-
Kluyveromyces lactis
-
-
-
Kluyveromyces marxianus
-
-
-
Kluyveromyces sp.
-
-
-
Lactobacillus delbrueckii subsp. bulgaricus
-
-
-
Lactobacillus sp. 'thermophilus'
-
-
-
Leuconostoc citrovorum
-
-
-
Mycothermus thermophilus
-
-
-
Niallia circulans
-
-
-
Penicillium multicolor
-
-
-
Rhizomucor miehei
-
-
-
Rhizomucor pusillus
-
-
-
Saccharomyces anamensis
-
-
-
Saccharomyces cerevisiae
-
-
-
Sinorhizobium meliloti
-
-
-
Sporotrichum sp.
-
-
-
Streptomyces coelicolor
-
-
-
Thermomyces lanuginosus
-
-
-
Thermothelomyces heterothallicus
-
-
-
Trichocladium griseum
-
-
-
Umbelopsis vinacea
-
-
-
Weizmannia coagulans
-
-
-
Zygosaccharomyces lactis
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
lactose + H2O
-
Escherichia coli D-glucose + D-galactose
-
?
lactose + H2O
-
Geobacillus stearothermophilus D-glucose + D-galactose
-
?
lactose + H2O
-
Aspergillus niger D-glucose + D-galactose
-
?
lactose + H2O
-
Weizmannia coagulans D-glucose + D-galactose
-
?
lactose + H2O
-
Niallia circulans D-glucose + D-galactose
-
?
lactose + H2O
-
Kluyveromyces marxianus D-glucose + D-galactose
-
?
lactose + H2O
-
Aspergillus oryzae D-glucose + D-galactose
-
?
lactose + H2O
-
Kluyveromyces lactis D-glucose + D-galactose
-
?
lactose + H2O
-
Penicillium multicolor D-glucose + D-galactose
-
?
lactose + H2O
-
Caldariella acidophila D-glucose + D-galactose
-
?
lactose + H2O
-
Geobacillus stearothermophilus HRI D-glucose + D-galactose
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30 35
-
Kluyveromyces marxianus
30 35
-
Kluyveromyces lactis
35
-
-
Escherichia coli
55
-
-
Aspergillus niger
55
-
-
Weizmannia coagulans
55
-
-
Aspergillus oryzae

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
55
-
-
Escherichia coli
55
-
-
Aspergillus niger
55
-
-
Weizmannia coagulans
55
-
-
Niallia circulans
55
-
half-life: at least 1.5 h Geobacillus stearothermophilus
60
-
half-life: 1 h Geobacillus stearothermophilus
65
-
-
Aspergillus niger
65
-
half-life: 10 min Geobacillus stearothermophilus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
3 4
-
Aspergillus niger
5
-
-
Aspergillus oryzae
5
-
-
Caldariella acidophila
6.5 7
-
Kluyveromyces lactis
6.6
-
-
Escherichia coli
6.6
-
-
Kluyveromyces marxianus
7.2
-
-
Escherichia coli

pH Stability

pH Stability pH Stability Maximum Comment Organism
2.5 7 stable Aspergillus oryzae
2.5 8 stable Aspergillus niger
6 8 stable Escherichia coli
6.5 7.5 stable Kluyveromyces marxianus
6.5 7.5 stable Kluyveromyces lactis