Skip to main content

Table 2 Morphological, physiological, and biochemical properties and amino acid utilization of Streptomyces sp. SBLWN_MH2

From: New lipase-producing Streptomyces isolated from halo-alkaline habitat in Wadi El Natrun: polyphasic identification and statistical optimization of enzyme production

Characteristics Results
Morphological characteristics
 Spore chains Spiral
 Spore surface Smooth
 Color of aerial mycelium White series
Physiological characteristics
 Melanin production Positive
 Action of milk No coagulation in 14 days
 Nitrate reduction Positive
 Gelatin liquefaction Negative
 Starch hydrolysis Positive
 Cell wall ll-diaminopimelic acid
Carbon utilization
 No carbon
d-glucose +
d-xylose ±
l-arabinose
d-fructose
 Raffinose
d-mannitol +
 Meso-inositol ±
 Salicin ND
 Sucrose ±
Temperature tolerance (°C)
 28–30 °C Abundant
 40 °C Weak
 50 °C No growth
Amino acids
dl-methionine
dl-iso-leucine +
l-arginine +
l-lysine
l-glutamic
l-histidine +
 Ph-alanine +
l-aspargine +
l-valine +
l-cysteine +
 Glycine ++
 Prolene +
 Ornithine +
 Tyrosine +
dl-serine +
NaCl % resistance
 0 Gray, abundant
 3–5 White, good
 7–10 Light gray, weak
 13 No growth
Antibiotic susceptibility (mm)
 Rifamycin (RD, 5 μg) 14b
 Vancomycin (VA, 30 μg) 40c
 Streptomycin (S, 10 μg) 00a
 Neomycin (N, 30 μg) 30c
 Tetracycline (TE, 5 μg) 20c
 Nalidixic acid (NA, 30 μg) 15b
 Novobiocin (NV, 30 μg) 40c
Cefodizime (CDZ 30 μg) 00a
  1. ND not detected
  2. “+++” = good growth, “++” = moderate growth, “+” = weak growth, “−” = negative
  3. aSusceptible
  4. bIntermediate
  5. cResistant
\