5,7-Dimethoxyflavone Augments Oolonghomobisflavan B-Mediated Apoptotic Cell Death in Multiple Myeloma Cells through Activation of the 67LR/cGMP/ASM Signaling Axis

Eun-Mi Ahn, Jaehoon Bae

Oolonghomobisflavan B (OHBFB) is a prominent and specific polyphenolic constituent of oolong tea. We previously identified a cell membrane receptor for OHBFB an...

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DOI: https://doi.org/10.20307/nps.2026.32.1.1

Comparative Extraction Using Steam and Simultaneous Extraction Techniques, Chemical Profiling, and Antibacterial Activity of Essential Oil from Tagetes erecta and Tagetes patula

Achyut Adhikari, Prajwal Acharya, Prabina Shrestha, Karuna Bajracharya, Kapil Aryal, Sajan Lal Shyaula, Amit Jaisi

The extraction of essential oil can be done in several ways, with some emphasizing quality and others emphasizing quantity. Essential oil components of and we...

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DOI: https://doi.org/10.20307/nps.2026.32.1.8

Dillapiole, a Phenylpropanoid from Piper aduncum and Dill Weed, Attenuates H₂O₂-Induced Muscle Atrophy in C2C12 Myotubes

Rackhyun Park

Skeletal muscle atrophy is closely associated with oxidative stress-induced inflammatory responses, which lead to the activation of catabolic pathways and the l...

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DOI: https://doi.org/10.20307/nps.2026.32.1.16

Protective Effect of Secang Wood ( Caesalpinia sappan L.) on Wistar Rats’ Trachea upon Exposure to Cigarette Smoke

Irfan Yunianto, Haris Setiawan, Dewi Nurul Istiqomah

Continuous exposure to cigarette smoke causes oxidative stress, leading to diseases in the respiratory tract. Secang ( L.) wood is a popular herbal drink in Ind...

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DOI: https://doi.org/10.20307/nps.2026.32.1.22

Online DPPH Assay Coupled with LC-QTOF-MS for Rapid Identification of Antioxidant Constituents from Zelkova serrata

Ngoc Khanh Vu, Chang Jung Kim, Soo Min Kim, Young Jun Kim, Kyeong Seon Lee, Ki Yong Lee

(Thunb.) Makino is a deciduous tree commonly distributed in East Asia. Several investigations have documented the biological activity of extracts of this speci...

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DOI: https://doi.org/10.20307/nps.2026.32.1.29

Microenvironment-Driven Modulation of A2E Photoreactivity and Fluorescence Under Blue Light

Deepak Basyal, Shiva Kumar Bhandari, Hye Jin Kim

A2E, a major pyridinium bisretinoid component of retinal lipofuscin, functions as a photosensitizer that undergoes blue light-induced oxidation, contributing to...

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DOI: https://doi.org/10.20307/nps.2026.32.1.38

Nitric Oxide Production Inhibitory Terpenylated Coumarins from Ailanthus altissima

Beom Kyun An, Jae Sang Han, Joon Su Jang, Yong Beom Cho, Mi Kyeong Lee, Bang Yeon Hwang

LC-MS/MS-based molecular networking was used to guide the targeted isolation of terpenylated coumarins from the barks of . Five known terpenylated coumarins (–)...

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DOI: https://doi.org/10.20307/nps.2026.32.1.44

A New Methoxyflavonoid Rutinoside and PTP1B-Inhibitory Phenolic Compounds from the Water Extract of Areca catechu L.

Manh Tuan Ha, Trong Trieu Tran, Thu Huong Tran, Seung Eui Min, Sang-Jin Park, Kang-Hyun Han, Jungmoo Huh, Jeong Ah Kim, Byung Sun Min

Phytochemical investigation of the water extract and alkaloid fraction of L. led to the isolation of one new methoxyflavonoid rutinoside (), together with elev...

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DOI: https://doi.org/10.20307/nps.2026.32.1.50

PTP1B Inhibitory Constituents from Dystaenia takeshimana : Mechanistic Insights via Kinetic and Molecular Docking Analyses

Manh Tuan Ha, Trong Trieu Tran, Thu Huong Tran, Jungmoo Huh, Jeong Ah Kim, Byung Sun Min

(Nakai) Kitagawa belongs to the family Apiaceae (Umbelliferae) and is a perennial herb naturally endemic to Ulleung Island, Republic of Korea. Following its su...

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DOI: https://doi.org/10.20307/nps.2026.32.1.56

Quantitative HPLC-DAD Analysis and α -Glucosidase Inhibitory Activity of Major Compounds from the Stems and Pericarpium of Punica granatum L.

Thi Nguyet Anh Dinh, Dong Hoon Shin, You Mie Lee, Jeong Ah Kim

L. has been widely used in traditional medicine and is known to contain bioactive ellagitannins with potential antidiabetic properties. The primary objective o...

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DOI: https://doi.org/10.20307/nps.2026.32.1.63