Its a new thing and about tannin , with a research purposes and pharmacognosy studies.

1. Presented by Md. Sakib Al Hasan
ID: 20PHR019
Department of Pharmacy, BSMRSTU.
Bangabandhu Sheikh Mujibur Rahman Science and Technology University.
PHENOLIC COMPOUNDS
AND TANNINS
(With a new Dimension of Pharmacognosy and its Research Area)

2. Fig-1: Fraga-Corral et al., 2021.

3. Purposes of Pharmacognosy Study
Fig: Anti-microbial test in Pharmacy
Department, BSMRSTU
Fig: Clot lysis and membrane stability
test of canna indica flower water extract
in Pharmacy Department, BSMRSTU.
Medicinal Plant
Identification and
Classification
Toxicology
Bioactivity Assessment
antimicrobial
antioxidant
anticancer
Fig: Brine Shrimp toxicity test in
Pharmacy Department, BSMRSTU.
Drug Discovery
and Development

4. Tannins are polyphenolic
substances found in many plants product of
higher molecular weight, but < 500
(According to lipinski's rule of five).
They are soluble in dilute alkalis, alcohol,
glycerol and acetone, but only sparingly
soluble in other organic solvents and non-
crystallisable compounds.
Tannin classified mainly two types, these
are true tannin and pseudo tannins.

5. Plants contain many active compounds that
are used in APIs (active pharmaceutical
ingredients).
White catechu is a type of plant that contains
tannin, a phytochemical class.
This plant contains mainly two active
compounds: catechins and quercetin.
Black catechu is approximately same as the
white catechu.

6. Nutgall is a type of plant that contains
tannin, a phytochemical class.
This plant contains mainly gallotannic
acid (tannic acid).
Gallotannic acid can converts into
Gallic acid.
About Gallic Acid in Neurobiological
Activity:
Bhuia, M. S., Rahaman, M. M., Islam, T., Bappi, M. H., Sikder, M. I., Hossain, K.
N., Akter, F., Al Shamsh Prottay, A., Rokonuzzman, M., Gürer, E. S., Calina, D.,
Islam, M. T., & Sharifi-Rad, J. (2023). Neurobiological effects of gallic acid:
current perspectives. Chinese medicine, 18(1), 27.
https://doi.org/10.1186/s13020-023-00735-7

7. Quercetin
Quercetin is lipophilic and can cross
blood brain barrier.
Quercetin has many pharmacological
activity.
PubMed has 26,518 results about this.
Article about Quercetin from Department of Pharmacy,
BSMRSTU:
1. Islam, M. S., Hossain, R., Ahmed, T., Rahaman, M. M., Al-Khafaji, K., Khan, R. A., Sarkar,
C., Bappi, M. H., de Andrade, E. M., Araújo, I. M., Coutinho, H. D. M., Kowalska, G.,
Kowalski, R., Hanif, M. A., & Islam, M. T. (2022). Anxiolytic-like Effect of Quercetin
Possibly through GABA Receptor Interaction Pathway: In Vivo and In Silico
Studies. Molecules (Basel, Switzerland), 27(21), 7149.
https://doi.org/10.3390/molecules27217149
2. Bappi, M. H., Prottay, A. A. S., Kamli, H., Sonia, F. A., Mia, M. N., Akbor, M. S., Hossen,
M. M., Awadallah, S., Mubarak, M. S., & Islam, M. T. (2023). Quercetin Antagonizes the
Sedative Effects of Linalool, Possibly through the GABAergic Interaction Pathway.
Molecules (Basel, Switzerland), 28(14), 5616. https://doi.org/10.3390/molecules28145616

8. Thank You

9. Any Question???