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5 protocols using 3 5 dinitrosalicylic acid

1

Carbohydrate Characterization Protocol

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Maltopentaose and HPA were purchased from Sigma Aldrich. Soluble
starch was procured from SRL, Mumbai, India. d-Maltose and
3,5-dinitrosalicylic acid (DNSA) were obtained from HiMedia Laboratories,
Mumbai, India. Solvents like methanol, 2-propanol, n-hexane, and ethyl acetate were obtained from Merck India Ltd., Mumbai.
Chemicals and solvents were of AR and HPLC grades.
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2

Enzymatic Starch Hydrolysis Protocol

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Potassium dihydrogen phosphate, sodium hydroxide, hydrochloric acid, agar, calcium chloride dihydrate (Qualigens Fine Chemicals, Mumbai, India), and soluble starch and 3,5-dinitrosalicylic acid (DNS) (Himedia Laboratories Pvt. Ltd., Mumbai, India) were used as received. Fungal α-amylase (source Aspergillus oryzae), sodium potassium tartrate, coomassie brilliant blue G, and ortho-phosphoric acid were purchased from S. D. Fine-Chem Ltd., Mumbai, India. All other chemicals and solvents were of analytical grade and were used without further purification. Double-distilled water was used throughout the study.
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3

Enzymatic Evaluation of Amylase and Glucosidase

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Chemicals such as soluble starch and porcine pancreatic α-amylase (PPA) were purchased from SRL Pvt. Ltd. (Mumbai, India). α-Glucosidase, 3,5-dinitrosalicylicacid (DNSA), and 2,4-dinitrophenyl hydrazine (DNPH) were obtained from HiMedia Laboratories (Mumbai, India). Para-nitrophenyl α-d-glucopyranoside and standards such as gallic acid, quercetin, and ascorbic acid were purchased from Sigma-Aldrich Co. (St. Louis, MO, USA). Acarbose was purchased from Bayer Scientific (Leverkusen, Germany). All other reagents and chemicals were of analytical grade and procured locally in Chennai.
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4

Comprehensive Chemical Reagents for Analytical Procedures

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Various chemicals of analytical
grade like hydrochloric acid (HCl), sulfuric acid (H2SO4), nitric acid (HNO3), phosphoric acid (H3PO4), sodium tungstate (Na2WO4·2H2O), sodium carbonate (Na2CO3), ammonium
molybdate ((NH4)6Mo7O24), ferric chloride (FeCl3), sodium chloride (NaCl), potassium
ferricyanide (K3Fe(CN)6), potassium permanganate
(KMnO4), sodium phosphate buffer, sulfosalicylic acid,
trichloroacetic acid (TCA), and potassium persulfate (K2S2O8) were obtained from Sisco Research Laboratory
(Mumbai, India). Liquified phenol, 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic
acid (ABTS), boron trifluoride-methanol (BF3-methanol),
tannic acid, gallic acid, rutin, aluminum chloride (AlCl3), and heptadecanoic acid were purchased from Sigma-Aldrich (Bangalore,
India). 2,2-Diphenyl-picrylhydrazyl (DPPH), 3,5-dinitrosalicylic acid,
bovine serum albumin, methyl orange indicator, calcium chloride, phytic
acid, folin-Ciocalteau’s reagent, and ascorbic acid were obtained
from Hi-Media Labs, Mumbai, India. Solvents like acetone, n-hexane,
methanol, and absolute ethanol were procured from Merck (Mumbai, India).
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5

Antioxidant and Antidiabetic Assays

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Folin-Ciocalteu’s reagent, sodium carbonate, aluminium chloride, potassium acetate, quercetin, Mueller-Hilton agar medium, DPPH (2,2-diphenyl-1-picrylhydrazyl), ABTS (2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)), potassium persulfate, ammonium molybdate, trisodium phosphate, potassium ferrocyanide, glucose, hemoglobin, sodium azide, 3, 5-dinitrosalicylic acid, ascorbic acid and α-amylase were purchased from Himedia (Bangalore, India). α- glucosidase, p-NPG (p-nitro phenyl α-d-glucopyranoside)), gallic acid, acarbose was purchased from Sigma–Aldrich (Bangalore, India). Standard anti-microbial drug, gentamycin and antidiabetic drug, metformin were purchased from the local market. All other chemical reagents and buffers were used as an analytical grade in this study.
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