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Oil palm frond juice as future fermentation substrate: a feasibility study
Che Mohd Hakiman Che Maail1, Hidayah Ariffin1, Mohd Ali Hassan1
1Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia.
Biomed Research International
|July 25, 2014
Summary
Oil palm frond (OPF) juice is a viable fermentation substrate, yielding high sugars via hydraulic pressing. Concentrated OPF juice shows excellent storage stability, making it ideal for industrial applications.
Area of Science:
- Agricultural Science
- Biotechnology
- Food Science
Background:
- Oil palm frond (OPF) juice presents a promising, abundant substrate for industrial fermentation due to its high sugar content.
- Key factors influencing sugar yield and storage stability of OPF juice require thorough investigation for optimal utilization.
Purpose of the Study:
- To evaluate the impact of physical pretreatment and storage duration of OPF petioles on overall sugar yield.
- To assess the storage stability of OPF juice under various conditions.
Main Methods:
- Hydraulic pressing was employed for physical pretreatment of OPF petioles to extract juice.
- OPF petioles were stored for up to 72 hours before processing.
- OPF juice was concentrated via 95% water removal and stored at 4°C and 30°C for 10 days.
Main Results:
- Hydraulic pressing achieved the highest sugar recovery, approximately 40 g/kg (88% yield).
- Storing OPF petioles for 72 hours reduced free sugars by 11 g/kg.
- Concentrated OPF juice demonstrated superior storage stability at both 4°C and 30°C for 10 days, with no Maillard effect observed after thermal processing.
Conclusions:
- OPF juice is a suitable fermentation substrate, being renewable, consistently available, and easy to obtain.
- Concentrated OPF juice exhibits excellent storage stability, crucial for industrial fermentation processes.
- The absence of impurities and microbial inhibition further supports OPF juice as an ideal fermentation substrate.
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