@article {1863, title = {Antioxidant Activity of DPPH, CUPRAC, and FRAP Methods, as well as Activity of Alpha-Glucosidase Inhibiting Enzymes from Tinospora crispa (L.) Stem Ultrasonic Extract}, journal = {Pharmacognosy Journal}, volume = {14}, year = {2022}, month = {October 2022}, pages = {511-520}, type = {Original Article}, chapter = {511}, abstract = {

Aims: The goal of this work was to get the stem extract of Tinospora crispa (L.) using ultrasoundassisted extraction (UAE) with duration and amplitude changes to achieve optimal extraction conditions. The antioxidant potential of the extract as measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH), CUPRAC (Cupric Ion Reducing Antioxidant Capacity), FRAP (Ferric Reducing Ability of Plasma), and its antidiabetic potential. Results: The third test of antioxidant methods showed that the measurement of antioxidant activity with, DPPH, CUPRAC, and FRAP gave significantly different results, but CUPRAC and FRAP gave the same response to the ethanol extract of Tinospora crispa stems, it can be concluded that the extract of Tinospora crispa stems in all treatments had strong antioxidant activity using either the CUPRAC or methods FRAP. In addition, it is very active as an antidiabetic by inhibiting alpha glucosidase. The optimum extract selected was extract B (extraction time was 35 minutes and amplitude 65\%) with IC50 values for antioxidant activity in the CUPRAC method of 72.53 {\textpm} 0.18 mg/L and the FRAP method of 152.29 {\textpm} 2.16 mg/L, while the inhibition of alpha glucosidase was 0.30 {\textpm} 0.006 mg/L.

}, keywords = {Antidiabetic, Antioxidant, Tinospora crispa (L.), Ultrasound-assisted extraction.}, doi = {10.5530/pj.2022.14.128}, author = {Candra Irawan and Imalia Dwi Putri and Maman Sukiman and Andita Utami and Ismail and Ratna Komala Putri and Anisa Lisandi and Andrean Nur Pratama} } @article {1837, title = {Antioxidant Capacity and Potential as an Alpha-Glucosidase Inhibitor in Phaleria macrocarpa (Scheff.) Boerl Fruit Peel Ultrasonic Extract}, journal = {Pharmacognosy Journal}, volume = {14}, year = {2022}, month = {August 2022}, pages = {305-312}, type = {Original Article }, chapter = {305}, abstract = {

Phaleria macrocarpa (Scheff.) Boerl is native to the tropical region of Papua Island, Indonesia, and has traditionally been used as a herbal drink, either alone or in combination with other medicinal plants, to treat diseases such as cancer, hypertension, and diabetes mellitus. This study aimed to obtain the fruit peel extract of Phaleria macrocarpa (Scheff.) Boerl. through the application of ultrasound-assisted extraction (UAE) with variations in time and amplitude to produce optimal extraction conditions. The potential of the extract as an antioxidant using the cupric ion reducing antioxidant capacity (CUPRAC) and ferric reducing antioxidant power (FRAP) methods, and its potential as an antidiabetic through alpha glucosidase inhibition. The optimum extract selected was extract C (extraction time was 45 minutes and amplitude 60\%) with IC50 values for antioxidant activity in the CUPRAC method of 39.63 {\textpm} 0.009 mg/L and the FRAP method of 77.37 {\textpm} 0.8 mg/L, while the inhibition of alpha glucosidase was 0.45 {\textpm} 0.007 mg/L. It can be concluded that the ethanol extract of Phaleria macrocarpa fruit peel has the potential as a source of antioxidants and anti-diabetic.

}, keywords = {Alpha-glucosidase, Antidiabetic, Antioxidant, Phaleria macrocarpa (Scheff.) Boerl}, doi = {10.5530/pj.2022.14.100}, author = {Candra Irawan and Maman Sukiman and Ismail and Imalia Dwi Putri and Andita Utami and Andrean Nur Pratama and M. Ilham Kumala Zalni} }