Flaxseed‐Derived Rhamnogalacturonan as a Biogenic Stabilizer for CuO Nanoparticles With Photocatalytic, Antimicrobial, and Pollutant‐Sensing Applications. - Zulfiqar, Zarfishan; Fatima, Zain; Azeeqa, Nimrim; Iram, Fozia; Ahmad, Imran; Wajid, Muhammad; Majeed, Aamna; Qaiser, Muhammad Naeem; Muhammad, Gulzar (Environmental Quality Management, 2026)