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Table 2 Specific activities of AmyZ1 and other known α-amylases toward soluble starches and raw starches

From: AmyZ1: a novel α-amylase from marine bacterium Pontibacillus sp. ZY with high activity toward raw starches

Source (enzyme name) Specific activity (U/mg) Refs
Soluble starch Rice Corn Wheat Potato
Bacteria
 Bacillus licheniformis 9945a (BliAmy) 3667 NM NM NM NM [49]
 Luteimonas abyssi XH031T (LaaA) 8881 NM NM NM NM [42]
 Bacillus licheniformis AS08E (Blamy-I) 1063 NM NM NM NM [50]
 Bacillus sp. UEB-S 900 NM NM NM NM [51]
 Streptomyces badius DB-1 247 156 148 212 NM [52]
 Geobacillus thermoleovorans (Gt-amy) 1723 1049 2076 2371 NM [12]
 Geobacillus sp. (Gs4j-amyA) 8600 NM NM NM NM [17]
 Bacillus amyloliquefaciens 72 31 45 40 68 [10]
 Aeromonas salmonicida (AmyASS) 45 52 NM 5 NM [22]
 Marine bacterial metagenomes (AmyP) (unknown marine bacterium) NM 119 NM 7 12 [2]
 Bacillus acidicola 1166 875 793 979 NM [11]
 Bacillus sp. YX-1 NM NM NM NM 607 [53]
 Corallococcus sp. strain EGB (AmyM) sp. Strain EGB 14,000 NM NM NM NM [54]
 Pontibacillus sp. ZY (AmyZ1) 14,815 12,621 9056 5158 2623 This study
Fungi
 Aspergillus penicillioides 118 NM NM NM NM [43]
 Aspergillus oryzae cmc1 32 NM NM NM NM [44]
 Aspergillus oryzae cmc1 mutant M-100(6) 2461 NM NM NM NM [44]
 Aspergillus oryzae strain S2 (rAmyA) 5150 NM NM NM NM [45]
 Rhizopus oryzae (RoAmy) 1123 1044 1449 1494 1089 [13]
 Thermomyces dupontii (TdAmyA) 2814 2339 2709 2417 1315 [14]
Yeast
 Cryptococcus flavus (rAmy1) 4165a NM NM NM NM [46]
 Cryptococcus flavus 843b NM NM NM NM [47]
 Cryptococcus sp. S-2 2539 NM NM NM NM [9]
 Saccharomycopsis fibuligera (Sfamy KZ) 120 91c 98d NM NM [48]
  1. Enzyme activity was measured by DNS method. One unit of amylase activity was defined as the amount of enzyme needed to release 1 μmol of reducing sugars as maltose per minute
  2. NM not mentioned
  3. aOne unit was defined as the amount of enzyme necessary to produce 1 mg glucose equivalent/min
  4. bOne unit of amylase activity was defined as the amount of enzyme necessary to hydrolyze 0.1 mg starch per minute
  5. c,dThe substrates were boiled