Chemical and deep-frying oxidative stability of sunflower–red palm olein blends

PurposeThe effect of the addition of red palm olein (RPO) as a natural antioxidant to sunflower (SF) on chemical properties and deep-frying oxidative stability of resultant oil during storage.Design/methodology/approachRPO was added to SF at different levels 0, 5, 10, 15, 20, 25, 50, 75 and 100 (w/w), and potato chips were fried in oil blends repeatedly at 180 °C for 2.5 min for five days to evaluate the effect on chemical properties and oxidative stability.FindingsThe results revealed that linoleic acid and total polar compound (TPC) contents decreased in all RPO and SF resultant oil after five days of storage. Colour significantly (p = 0.05) decreased, while peroxide and iodine values were significantly lowered during storage. The oxidative stability increased significantly in the resultant oil. However, an increase in free fatty acid (FFA) before frying significantly reduced with repeated frying of resultant oil during storage. RPO (5–75%) therefore retards oxidative rancidity in the resultant oil after repeated deep frying and storage.Originality/valueSF oil is high in polyunsaturated fatty acids but prone to oxidation upon heating and storage. RPO is an important ingredient used in industrial frying rich in phytonutrients and a better replacement to synthetic antioxidants. This study indicated that supplementing SF oil with RPO may be recommended to improve the oxidative stability of oils during frying.

PENINGKATAN PENGETAHUAN PETANI TERHADAP PERBENIHAN TANAMAN DURIAN

Carotenoids in red palm olein oil (RPOOO) have been scientifically proven to have good functional properties for the human health so that RPOOO has the potential to be used as one of the healthy drinks. One of the problems faced in the use of RPOO as a health drink is the taste and aroma is less interesting. This study aims to: 1) To obtain the ratio of ratio between RPOO and salak sidempuan extract used to obtain stable emulsion, acceptable viscosity, and acceptable RPOO with salak Sidempuan emulsion product Emulsions were prepared using 2% carbonmethylcellulosa as emulcifier and four different composition ratios of RPOO and salak extract were prepared. Emulsions characteristics and their sensory acceptability were investigated. The results of this study showed that the ratio of RPOO ratio and 1: 2 salak extract obtained the best stability with viscosity of 175 cP emulsion. In addition, emulsions with an RPOO ratio and 1:25 salak extract yield acceptable levels sensory attributes such as color, aroma and taste.

PENAMBAHAN EKSTRAK SALAK SIDEMPUAN (Salacca sumatrana) UNTUK MENINGKATKAN PENERIMAAN EMULSI MINYAK OLEIN SAWIT MERAH

Carotenoids in red palm olein oil (RPOOO) have been scientifically proven to have good functional properties for the human health so that RPOOO has the potential to be used as one of the healthy drinks. One of the problems faced in the use of RPOO as a health drink is the taste and aroma is less interesting. This study aims to obtain the ratio of RPOO and salak sidempuan extract used to obtain stable emulsion, acceptable viscosity, and acceptable emulsion product. Four emulsions were prepared using 1% carbonmethylcellulosa as emulcifier and four different composition ratios of RPOO and salak extract were prepared. Emulsions characteristics and their sensory acceptability were investigated. The results of this study showed that the ratio of RPOO ratio and 1: 2 salak extract obtained the best stability with viscosity of 175 cP emulsion. In addition, emulsions with an RPOO ratio and 1:25 salak extract yield preferable levels of sensory attributes such as color, aroma and taste.

Aktivitas Antioxidant, Polifenol Dan Evaluasi Sensori Cokelat Oles Fortifikasi Red Palm Olein Dari Biji Kakao Pilihan Klon Sulawesi Barat

Sulawesi Barat merupakan salah satu penghasil kakao utama dengan kontribusi sekitar 22 % terhadap produksi kakao di wilayah Sulawesi. Pengembangan kakao fermentasi dan tanpa fermentasi dalam pembuatan produk cokelat oles memberikan alternatif baru sebagai pangan fungsional. Penelitian ini bertujuan untuk karakterisasi aktivitas antioksidan, polifenol, karotenoid dan sensori pada produk cokelat oles menggunakan biji kakao pilihan melalui variasi cocoa liquor, gula aren dan red palm olein sehingga diperoleh produk cokelat oles fungsional. Parameter analisis karakteristik cokelat oles menggunakan Uji kuantitatif kadar polifenol total dengan metode Folin Ciocalteau, kadar total flavanoid, asam lemak bebas dan aktivitas antioksidan menggunakan metode DPPH IC50, serta analisis organoleptik menggunakan metode hedonik tingkat kesukaan. Fortifikasi cokelat oles menghasilkan kadar asam lemak bebas 0.88%, polifenol 2,6%, karotenoid 122.12 mg/g dan aktivitas antioksidan terkuat kisaran 24.1-26.4%. Cokelat oles variasi cocoa liquor, gula aren dan subtitusi lemak kakao dengan red palm olein, secara umum disukai oleh panelis dari segi rasa dan aroma. pemanfaatan gula aren dan red palm olein memberikan efek fungsional yang baik untuk produk cokelat oles sehingga sangat baik dikonsumsi untuk kesehatan karena bersifat pangan fungsional.