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Mbealo, E. and Utama, Q.D. 2022. IDENTIFIKASI SILDENAFIL SITRAT DALAM KOPI BUBUK DAN PRODUK OLAHANNYA YANG BEREDAR DI KOTA PALU MENGGUNAKAN METODE SOLID PHASE EXTRACTION (SPE) KROMATOGRAFI LAPIS TIPIS (KLT) DAN SPEKTROFOTODENSITOMETRI: Identification Of Sildenafil Citrate in Coffee Powder And Its Processed Products Circulating In Palu City Using Solid Phase Extraction (SPE) Method Thin Layer Chromatography (TLC) And Spectrophotodensitometry. Pro Food. 8, 2 (Nov. 2022), 60–72. DOI:https://doi.org/10.29303/profood.v8i2.274.