Effects of fermentation time and pH on soursop (Annona muricata) vinegar production towards its chemical compositions by Chin, Wai Ho, Azwan Mat Lazim, Shazrul Fazry, Umi Kalsum Hj Hussain Zaki, Lim, Seng Joe

“…Thus, it can be established that at fermentation time of 120 h and pH5.5, more sugar was used and more ethanol and acetic acid were produced.…”
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Optimisation of enzymatic protein hydrolysis of mud crab (Scylla sp.) to obtain maximum antioxidant activity using response surface methodology by Zaliha Harun, Amiza Mat Amin, Norizah Mhd Sarbon, Mohamad Khairi Mohd Zainol, Kazi Nazira Sharmin

“…Optimum condition was found to be at 54ºC, pH 5.5, 1% Protamex® and 1 hour of hydrolysis time. …”
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Boron removal from aqueous solution using curcumin-impregnated activated carbon by Azhar Abdul Halim, Nor Alia Roslan, Nor Shamsiah Yaacub, Mohd. Talib Latif

“…The maximum boron removal was obtained at pH5.5 and 120 min of contact time. Langmuir and Freundlich isotherm models were applied and it was determined that the experimental data conformed to both models. …”
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Influence of poly (Ethylene Glycol) on the characteristics of γ radiation-crosslinked poly (Vinyl Pyrrolidone)-low molecular weight chitosan network hydrogels by Maznah Mahmud, Rusli Daik, Zainah Adam

“…The results indicated PEG reduces almost 27% crosslinking density of the LMC-PVP hydrogel yet increased hydrogel’s water holding capacity from 450% and 480% to 750% and 650% in phosphate buffer solution (PBS) at pH5.5 and pH7.0, respectively. Also PEG enhanced the ability of LMC-PVP hydrogel to retain its moisture from dehydration at body temperature. …”
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Optimisation of Remazol Brilliant Blue R dye decolourisation and laccase enzyme production by Marasmius cladophyllus using response surface methodology by Nur Adila Muradi, Ahmad Husaini, Azham Zulkharnain, Hairul Azman Roslan, Tay, Meng Guan

“…The fungus is found capable of decolourising 99% of the dye after 12 days of incubation in Glucose Minimal (GM) liquid media (pH 5.5) and laccase activity of 285 U/L was recorded. …”
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Optimisation of enzymatic protein hydrolysis of mud crab (Scylla sp.) to obtain maximum angiotensin-converting enzyme inhibitory (ACEI) activity using response surface methodolo... by Zaliha Harun, Amiza Mat Amin, Norizah Mhd Sarbon, Mohamad Khairi Mohd Zainol

“…The enzymatic hydrolysis conditions used in the optimisation were temperature (45-65ºC), pH (pH 5.5-7.5), hydrolysis time (1-4 hours) and Protamex® enzyme to substrate (E/S) ratio (1-3%). …”
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Optimal physical and nutrient parameters for growth of trichoderma virens UKMP-1M for heavy crude oil degradation (Pengoptimuman Parameter Fizikal dan nutrien bagi pertumbuhan tri... by Ainon Hamzah, Mazni Abu Zain, Othman Omar, Sahidan Senafi

“…Although it grew at pH between 5.0 and 7.0, it grew best at pH 5.5. T. virens UKMP-1M grew at temperatures between 25°C and 35°C, with its highest growth at 30°C. …”
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Penghasilan aseton-butanol-etanol dan gas hidrogen daripada efluen kilang kelapa sawit secara fermentasi anaerobik dengan clostridium acetobutylicum NCIMB 13357 by Pang , Wey Kit, Wan Mohtar Wan Yusoff, Mohd Sahaid Kalil, Osman Hassan

“…Penghasilan gas hidrogen didapati tertinggi pada pH 5.5 (31mL). Gas hidrogen turut dihasilkan pada pH awal medium lain dengan penghasilan melebihi 50% (v/v) kecuali pada pH 4.5 yang hanya menghasilkan 5mL (16% v/v) gas hidrogen. …”