Naga, Tomy Ong Sky (2025) Pengaruh konsentrasi dan kondisi penyimpanan terhadap kestabilan antosianin dan betasianin ekstrak buah naga dalam aplikasi permen pectin jelly = Effect of concentration and storage on anthocyanin and betacyanin stability in dragon fruit extract for pectin jelly candy. Bachelor thesis, Universitas Pelita Harapan.
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Abstract
Pewarna sintetis adalah pewarna yang umum digunakan dalam industri, bersifat stabil namun menimbulkan dampak kesehatan. Pewarna alami aman untuk dikonsumsi dan memiliki sifat fungsional antara lain sebagai antioksidan, namun bersifat kurang stabil. Buah naga merah (Hylocereus polyrhizus) berpotensi menjadi sumber pewarna alami merah-keunguan sehingga dapat menjadi alternatif sebagai pewarna untuk produk confectionery. Tujuan penelitian ini adalah mengkaji pengaruh konsentrasi ekstrak buah naga merah dan kondisi penyimpanan terhadap kestabilan warna permen pectin jelly. Empat konsentrasi dan tiga kondisi penyimpanan, digunakan sebagai faktor dalam penelitian ini. Ekstrak buah naga merah berbasis air diekstrak melalui proses maserasi dan di pekatkan dengan menggunakan alat rotatory evaporator. Hasil menunjukkan bahwa proses ekstraksi menghasilkan ektrak pekat buah naga merah dengan rendemen 9,255 ± 0,028% (bk), dan mengandung 3,7862 ± 0,8053 mg antosianin/ g ekstrak (bk), 0,0328 ± 0,00062 mg betasianin/ g ekstrak (bk), total fenolik 699,5411 ± 12,9062 mg GAE/ g ekstrak (bk), memiliki aktivitas antioksidan 582,0867 ± 18,8325 mg AAE/ g ekstrak (bk), dan warna (Hue) merah-keunguan. Pada aplikasinya dalam permen pectin jelly, hasilmenunjukkan bahwa setelah 14 hari penyimpanan pada kondisi yang berbeda terjadi penurunan antosianin dan betasianin sebesar 55,89% ± 0,005, 65,19% ± 0,051, dan peningkatan total fenolik dan aktivitas antioksidan sebesar 138,94% ± 1,36, dan 149,11% ± 1,24 dari awal sebelum penyimpanan. Konsentrasi ekstrak 0,05% berpengaruh signifikan terhadap stabilitas total fenolik permen pectin jelly, sementara kondisi penyimpanan ruang gelap-lemari dingin berpengaruh signifikan terhadap total betasianin, total fenolik, dan memiliki warna. / Synthetic colorants are commonly used in the food industry due to their stability, yet they pose potential health risks. Natural colorants, while safer for consumption and often functionally bioactive (e.g., antioxidant properties), typically exhibit lower stability. Red dragon fruit (Hylocereus polyrhizus) emerges as a promising natural source of red purple pigments, offering a viable alternative for confectionery products. This study aimed to evaluate the effects of red dragon fruit extract concentration and storage conditions on the color stability of pectin jelly candy. Four extract concentrations and three storage conditions were tested as experimental variables. The water-based red dragon fruit extract was obtained through maceration and concentrated using a rotary evaporator. The extraction process yielded a concentrated red dragon fruit extract with a 9.255 ± 0.028% drybasis (DB) yield, containing 3.7862 ± 0.8053 mg anthocyanins/g (DB), 0.0328 ± 0.00062 mg betacyanins/g (DB), total phenolics of 699.5411 ± 12.9062 mg GAE/g (DB), antioxidant activity of 582.0867 ± 18.8325 mg AAE/g (DB), and a characteristic red-purple hue (Hue value).When applied to pectin jelly candy, the results revealed that after 14 days of storage under varying conditions, anthocyanin and betacyanin content decreased by 55.89% ± 0.005 and 65.19% ± 0.051, respectively, while total phenolics and antioxidant activity increased by 138.94% ± 1.36% and 149.11% ± 1.24% compared to initial values. The 0.05% extract concentration significantly influenced the stability of total phenolic content in the pectin jelly, whereas storage in a dark refrigerated environment significantly preserved betacyanin content, total phenolics, and maintained the red-purple color.
merah-keunguan
Item Type: | Thesis (Bachelor) |
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Creators: | Creators NIM Email ORCID Naga, Tomy Ong Sky NIM01034210054 tomyongskynaga@gmail.com UNSPECIFIED |
Contributors: | Contribution Contributors NIDN/NIDK Email Thesis advisor Wijaya, Julia Ratna NIDN0305075905 julia.wijaya@uph.edu |
Uncontrolled Keywords: | antosianin; betasianin; buah naga merah; confectionery; permen pectin jelly; kestabilan |
Subjects: | T Technology > TP Chemical technology > TP368-456 Food processing and manufacture |
Divisions: | University Subject > Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Food Technology Current > Faculty/School - UPH Karawaci > Faculty of Science and Technology > Food Technology |
Depositing User: | TOMY ONG SKY NAGA |
Date Deposited: | 24 Jul 2025 05:31 |
Last Modified: | 24 Jul 2025 05:31 |
URI: | http://repository.uph.edu/id/eprint/70062 |