Update Artikelilmiah: 48700

FAISHAL HENDRIANSYAH ADHI NUGROHO

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Abstrak (Bhs. Indonesia)

Oleoresin jahe (Zingiber officinale Roscoe) mengandung senyawa bioaktif yang penting dalam industri pangan dan farmasi. Untuk meningkatkan efisiensi ekstraksi dan kualitas produk, diperlukan metode ekstraksi yang efektif dan ramah lingkungan. Ultrasound-Assisted Extraction (UAE) dengan minyak sawit sebagai pelarut menjadi pendekatan potensial karena kemampuannya mempercepat proses ekstraksi serta meningkatkan hasil. Penelitian ini mengoptimalkan ekstraksi oleoresin jahe menggunakan metode UAE dengan variabel rasio pelarut terhadap sampel (1:3–1:5,41421 g/mL) dan waktu ekstraksi (17,5736–102,426 menit). Rancangan percobaan disusun menggunakan Central Composite Design (CCD) dalam Response Surface Methodology (RSM). Respon yang diamati adalah persen hasil ekstraksi (%Rendemen) dan kadar asam lemak bebas (%ALB). Analisis data dilakukan melalui ANOVA, evaluasi R², adjusted R², serta pemodelan grafik kontur. Hasil menunjukkan bahwa peningkatan rasio pelarut dan waktu ekstraksi berkontribusi terhadap kenaikan %Rendemen, sedangkan %ALB cenderung menurun seiring peningkatan rasio pelarut. Titik optimum diperoleh pada rasio 1:4,774 g/mL dan waktu ekstraksi 89,211 menit, dengan prediksi yield sebesar 176,807% dan kadar ALB 0,252%. Model regresi yang dihasilkan dinilai layak dengan selisih R² dan adjusted R² kurang dari 0,2. Peningkatan rasio pelarut dan waktu ekstraksi berpengaruh terhadap kenaikan %rendemen oleoresin jahe, sedangkan peningkatan rasio pelarut cenderung menurunkan kadar asam lemak bebas (%ALB). Desain eksperimen dengan pendekatan RSM dapat digunakan untuk mengoptimalkan proses ekstraksi meskipun penelitian ini memiliki keterbatasan terkait akurasi hasil %rendemen.

Abtrak (Bhs. Inggris)

Ginger oleoresin (Zingiber officinale Roscoe) contains bioactive compounds that are important in the food and pharmaceutical industries. To enhance extraction efficiency and product quality, an effective and environmentally friendly extraction method is required. Ultrasound-Assisted Extraction (UAE) using palm oil as a solvent offers a promising approach due to its ability to accelerate the extraction process and increase yield. This study optimized the extraction of ginger oleoresin using UAE by varying the solvent-to-sample ratio (1:3–1:5.41421 g/mL) and extraction time (17.5736–102.426 minutes). The experimental design was structured using a Central Composite Design (CCD) under the Response Surface Methodology (RSM) framework. The responses observed were the extraction yield (%) and the free fatty acid content (%FFA). Data were analyzed through ANOVA, R² and adjusted R² evaluations, and contour plot modeling. The results indicated that increasing the solvent ratio and extraction time contributed to a higher extraction yield, while the %FFA tended to decrease with a higher solvent ratio. The optimum conditions were achieved at a solvent-to-sample ratio of 1:4.774 g/mL and an extraction time of 89.211 minutes, with a predicted yield of 176.807% and a %FFA of 0.252%. The regression model was deemed acceptable, with a difference between R² and adjusted R² values of less than 0.2. : Increasing the solvent ratio and extraction time positively affected the extraction yield of ginger oleoresin, while a higher solvent ratio tended to reduce the free fatty acid content. The experimental design using RSM proved applicable for optimizing the extraction process, although this study has limitations regarding the accuracy of the yield results in reflecting pure oleoresin content, which was not confirmed through qualitative analysis.

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