Coffee pulp, a major coffee waste in the coffee industry, has been found to contain bioactive compounds that can provide high antioxidant activity and hence, can be utilized as a natural antioxidant source. One of the beneficial utilizations of coffee pulp extract is its application in skin cosmetics, such as skin lotion. The application of antioxidant on the skin is one way to avoid skin damages and diseases from happening, which can be caused by free radicals generated through ultraviolet (UV) radiation from sunlight. The aim of this study is to apply the coffee pulp extract powder into skin lotion formulation, and to study the phenolic content, antioxidant activity and the stability of the formulated lotions. First, the coffee pulp (CP) was extracted at sample to solvent ratio of 1:10 (w/v) using ethanol/water mixtures at various extraction temperatures and times to obtain the optimum extraction condition. The resulting coffee pulp extract at optimum condition (50°C, 120 minutes) was pulverized into coffee pulp extract powder. The yield of the pulverization was 0.217146 g powder/g CP. The coffee pulp extract powder was then added into skin lotion formulation with four different concentrations (0.125 %, 0.25 %, 0.5 % and 1 % by mass). All coffee pulp skin lotions were found to show good physical stability and considerably higher antioxidant activity (IC50 : 5,805 ppm – 55,776 ppm) compared to commercial lotions (IC50 : 505,018 ppm – 557,218 ppm).
Coffee pulp is a by-product of coffee cherry processing during the production of coffee beans, and is usually disposed of as waste or used as compost. The valorization of coffee pulp is very important since a large quantity of coffee pulp is produced during coffee processing. In this study, the coffee pulp was extracted using various solvents at different temperatures and times to maximize the total phenolic content and the antioxidant activity of the extract. The total phenolic content was analyzed using Folin-Ciocalteu method, whereas the antioxidant activity was analyzed using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay. It was found that the total phenolic content and the antioxidant activity of the coffee pulp extract were strongly influenced by the extraction condition. The coffee pulp extract in powder form produced using a spray dryer also showed a high total phenolic content and a high antioxidant activity. The findings of this study showed that coffee pulp extract has great potential to be used as a source of antioxidants for various products such as foods, beverages, and herbals.
Latar belakang: Masalah kesehatan dan prestasi anak usia sekolah yang rendah saat ini menjadi penentu kualitas suatu bangsa dimasa yang akan datang. Pertumbuhan dan perkembangan fisik, mental dan intelektual pada anak sangat membutuhkan asupan zat gizi seperti protein dan vitamin A dan status gizi yang baik.Tujuan: Penelitian ini bertujuan untuk mengetahui keterkaitan tingkat konsumsi protein, vitamin A dan status gizi dengan hasil belajar anak sekolah dasarMetode: Jenis penelitian ini adalah penelitian asosiatif dengan menggunakan metode pendekatan survey. Pengambilan data pada penelitian ini bersifat cross sectional. Penelitian ini dilakukan pada bulan April hingga Juni 2019 di dua sekolah dasar yang ada di Kabupaten Badung-Bali. Teknik pengambilan menggunakan teknik random dengan jumlah sampel sebanyak 50 orang yang dilakukan di kelas V. Data mengenai konsumsi protein dan vitamin A diperoleh dengan menggunakan instrument food recall selama 3x24 jam. Data status gizi dengan menggunakan indeks massa tubuh (IMT) menurut umur. Data hasil belajar menggunakan hasil ujian akhir semester ganjil. Data dianalisis dengan menggunakan analisis korelasi sperman rank.Hasil: Terdapat 66% (33 orang) anak dengan kategori status gizi yang normal, 50% (25 orang) anak mengkonsumsi protein dengan kategori yang baik, dan 58% (29 orang) anak mengkonsumsi makanan sumber vitamin A dalam kategori yang sedang. Konsumsi protein (p<0,05) dan vitamin A memilki keterkaitan dengan hasil belajar (p<0,05) dan status gizi memilki keterkaitan dengan hasil belajar anak sekolah dasar (p<0,05).Simpulan: Konsumsi protein, vitamin A dan status gizi memilki keterkaitan dengan hasil belajar pada anak sekolah dasar.
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