| No. | Journal / Publisher | Title | Year | Role |
| 1. | Pertanika Journals | Utilization of glucose recovered by phase separation system from acid-hydrolysed oil palm empty fruit bunch for bioethanol production | 2010 | Reviewer |
| 2. | Pertanika Journals | Improved anaerobic treatment of palm oil mill effluent in a semi-commercial closed digester tank with sludge recycling and different feeding strategy | 2009 | Reviewer |
| 3. | Penerbit UTM | Effects of alkaline and acid treatment on the yield and quality of chitosan extracted from Absidia sp. DR | 2005 | Reviewer |
| 4. | Penerbit MARDI | Improvement of red-pigment-producing fungal strain (Monascus purpureus FTC 5391) using monospore isolation technique | 2004 | Referees |
| 5. | Penerbit UTM | Bioencapsulation of probiotic bacteria for their protection in an acidic medium via compression coating | 2003 | Reviewer |
| 6. | Penerbit UTM | Lactic acid purification of chitin from scampi waste using a horizontal rotating bioreactor: FED versus batch fermentation | 2003 | Reviewer |