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Table 1 Qualitative phytochemical screening of different extracts from Vanda roxburghii

From: Vanda roxburghii chloroform extract as a potential source of polyphenols with antioxidant and cholinesterase inhibitory activities: identification of a strong phenolic antioxidant

  PEF CLF EAF AQF
Tannins - - - ++
Flavonoids + +++ ++ +
Phenolic compounds + +++ ++ +
Alkaloids - - - +
Saponins - - - ++
Phytosterols ++ + - -
  1. Here, + = Present in mild amount, ++ = Present in moderate amount, +++ = Present in large amount, − = Absence
  2. PEF petroleum ether fraction, CLF chloroform fraction, EAF ethylacetate fraction, AQF aqueous fraction
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