Improving the anticancer efficiency of doxorubicin by luteolin nanoemulsion: In vitro study by Nooshin Divanbeigi, Mozhdeh Yousefian, Leila Etemad, Majid Azizi, Ailin Ebrahimzadeh, Fatemeh Oroojalian, Maryam Hashemi

“…Results: Luteolin NE was found to mimic a non-newtonian fluid with pH: 5.5 and an average particle size of 38.72 nm. The encapsulation efficiency was obtained at 79.61%. …”
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Contents of nickel, zinc, copper and lead in agricultural soils of the plains in the northwestern part of the Republic of Srpska by Mihajlović Dijana, Antić-Mladenović Svetlana, Radanović Dragoja, Predić Tihomir, Babić Mladen, Marković Sretenka, Maličević Zoran

“…Acidic soil reaction (pH<5.5) that increased bioavailability of metals was found in 38.6% of the samples investigated. …”
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Lime and Fertiliser Applications Increase Yield of Leafy Vegetable Crops in Cambodia by Sarith Hin, Veasna Touch, Vanndy Lim, Jochen Eberhard, Alice R. Melland, John McPhee, Suzie Jones, Stephen Ives, Vang Seng

“…Soil pH in the top 20 cm is generally low (pH 5.5 H₂O) and may limit the availability of nutrients. …”
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Advanced CNC/PEG/PDMAA Semi-IPN Hydrogel for Drug Delivery Management in Wound Healing by Samia Afrin, Md. Shahruzzaman, Papia Haque, Md. Sazedul Islam, Shafiul Hossain, Taslim Ur Rashid, Tanvir Ahmed, Makoto Takafuji, Mohammed Mizanur Rahman

“…The drug loaded hydrogel showed antimicrobial property by forming 25 and 23 mm zone of inhibition against <i>Staphylococcus aureus</i> (gram-positive) and <i>Escherichia</i> <i>coli</i> (gram-negative) bacteria, respectively, in antimicrobial analysis. At pH 5.5, 76% of the drug was released from the hydrogel within 72 h, as observed in an in vitro drug release profile. …”
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Use of High-Pressure Processing to Improve the Redness of Dark-Cutting Beef by Cole Reesman, Gary Sullivan, Gretchen Mafi, Mary-Grace Danao, Morgan Pfeiffer, Ranjith Ramanathan, Sunil More

“…Eight USDA Choice (mean pH=5.5; normal-pH beef) and 12 dark-cutting (mean pH=6.3) strip loins were obtained from a commercial packing plant within 2 d of harvest. …”
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Olive Oil Based Methotrexate Loaded Topical Nanoemulsion Gel for the Treatment of Imiquimod Induced Psoriasis-like Skin Inflammation in an Animal Model by Sheikh Abdur Rashid, Sajid Bashir, Faiza Naseem, Arshad Farid, Irfan A. Rather, Khalid Rehman Hakeem

“…After 20 h, the release kinetics predicted a 72.47% drug release at pH 5.5. FTIR findings demonstrated that the optimized MTX NEG formulation effectively fluidized both the epidermis and dermis of the skin, potentially increasing drug permeability and retention. …”
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Electrospun Polymer Nanofibers Reinforced by Tannic Acid/Fe+++ Complexes by Weiqiao Yang, Ana M. M. Sousa, Audrey Thomas-Gahring, Xuetong Fan, Tony Jin, Xihong Li, Peggy M. Tomasula, LinShu Liu

“…Changes in solution pH change the number of TA galloyl groups attached to the Fe+++ from one (pH &lt; 2) to two (3 &lt; pH &lt; 6) to three (pH &lt; 7.4) and affect the interactions between PVA and TA. At pH ~ 5.5, the morphology and fiber diameter size (FDS) examined by SEM are determinant for the mechanical properties of the fibrous mats and depend on the PVA content. …”
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Use of a Zwitterionic Surfactant to Improve the Biofunctional Properties of Wool Dyed with an Onion (<i>Allium cepa</i> L.) Skin Extract by Chiara Puri, Lucia Pucciarini, Matteo Tiecco, Virginia Brighenti, Claudia Volpi, Marco Gargaro, Raimondo Germani, Federica Pellati, Roccaldo Sardella, Catia Clementi

“…A preliminary investigation on the surfactant–quercetin interaction indicated that the optimal conditions for dye solubility, stability, and surfactant affinity require double-distilled water (pH = 5.5) as a medium and SB3-14 in a concentration above the c.m.c. (2.5 × 10⁻³ M). …”
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Limosilactobacillus reuteri inhibits the acid tolerance response in oral bacteria by Gabriella Boisen, Zdenka Prgomet, Gabriela Enggren, Hanna Dahl, Cindy Mkadmi, Julia R. Davies

“…Communities of L. reuteri ATCC PTA5289 and Streptoccus gordonii, Streptococcus oralis, Streptococcus mutans or Actinomyces naeslundii in the initial stages of biofilm formation were exposed to pH 5.5 to allow ATR induction, followed by a low pH challenge. …”
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Study on Antimicrobial Activity and Stability of Endophytic Fungus Apiospora malaysiana from Thamnolia subuliformis in Vitro by Qiuhua HE, Menglong LIU, Qixin GUO, Haiyan DING

“…When pH was lower than the background pH (5.5) of the extract, the diameter of the inhibition zone decreased. …”
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Granular fermentation enables high rate caproic acid production from solid-free thin stillage by Carvajal-Arroyo, José M., Candry, Pieter, Andersen, Stephen J., Props, Ruben, Seviour, Thomas, Ganigué, Ramon, Rabaey, Korneel

“…Using a fermentative expanded granular sludge bed reactor, caproic acid was produced at sustained rates of 12.3 g C6 L⁻¹ d⁻¹ (625 mmol C L⁻¹ d⁻¹ or 27.2 g C6-COD L⁻¹ d⁻¹) at pH 5.5, and concentrations of up to 6.8 g C6 L⁻¹. …”
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Pembentukan biofilm oleh bakteri filamentous yang tumbuh pada medium cair mengandung merkuri anorganik (HgCl2)=Production of biofilm by filamentous bacteria grown on liquidmedium... by Perpustakaan UGM, i-lib

“…Three of those isolates were able to grow at generation times (g) of 1,04h - 5,5h and specific growth rates (p) of 0,11 - 0,31h-I on medium containing 4 mg1-1 HgC12. …”

Physicochemical characterisation of unmodified oil palm mill fly ash and its adsorption of copper (II) and lead (II) ions from aqueous solutions by Sohail Rafiq

“…Additionally the adsorbent dosage of 0.1 g per 100 mL with the initial concentration of metal ions of 10 mg/L at the natural pH 5.5 are the suitable conditions for effective adsorption. …”
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Characterizing soil properties of lowland and hill dipterocarp forests at Peninsular Malaysia. by Abdul Kadir, Md Zaidey, Abdu, Arifin, Zahari, Ibrahim, Abdul Hamid, Hazandy, Hamzah, Mohd Zaki, Hassan, Affendy, Wasli, Mohd Effendy, Y., Khairul Hafiz, Jusop, Shamsuddin, Nik Majid, Nik Muhamad

“…The soils were very acid (pH <5.5), having low activity clay resulting in low (<16 cmol c kg -1) Cation Exchange Capacity (CEC), available P (Av. …”
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The suitability of pelleted diets in the cage culture of the giant gourami, Osphronemus goramy (Lacepede) by Ang, Kok Jee, Cheah, Sin Hock, Tan, G. H., Law, A. T.

“…The mean values for water quality parameters in the stUdy area cannot be considered ideal for aquaculture as it has a low pH (5.5), low alkalinity (7.0 mg) and low conductivity (24.7µMHOS).…”
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Partial Purification and Characterization of Molybdenum Reducing Enzyme from Klebsiella Oxytoca Hkeem by Lim, Hui Keem

“…Meanwhile, the enzyme showed an optimum activity at substrate pH 5.5 and 25ºC. The kinetics of electron donor (NADH) and electron acceptor (LPPM) for the enzyme were followed the classical Michaelis-Menten rectangular hyperbolic curve. …”
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Purification and characterization of glutamate decarboxylase from Aspergillus oryzae NSK by Lee, Audrey Ying Yeng

“…It is thermally stable between 0- 40˚C and was found to be optimally active at 55˚C and pH 5.5. The Km and Vmax values calculated were 10.18 mM and 5.15 U/ml/min, respectively. …”
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Fermentation conditions affecting growth and red pigment production of Monascus purpureus FTC 5391 by Abdul Manan, Musaalbakri, Ariff, Arbakariya, Mohamad, Rosfarizan, Abdul Karim, Mohamed Ismail

“…The suitable initial culture pH for red pigment production was varied from pH 5.5 to 9, but through this study the optimum initial culture pH was stated at 6.5. …”
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Extraction, purification and characterization of polygalacturonase from durian (Durio zibethinus L.) seed by Asmadi, Farhana Azmira

“…The optimum combination of extraction was achieved at 30 min extraction time, 50°C temperature and 5:1 ml/g of solvent-to-seed ratio at pH 5.5. Conventional purification processes are multistep, tedious and expensive; thus, it is vital to develop an economical, highly efficient and environmental friendly process for the purification of polygalacturonase with required properties. …”
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A study on the potability of rural water systems in Tanah Merah and Pasir Puteh districts,Kelantan by Affandi, Sharifah Mahani Syed Mahar

“…Parameters that have violations are, presence E.Coli (54.3%), pH (55.2%),colour (2.5%), turbidity (29.3%), free residual chlorine (86.7%), ammonia (3.7%), iron (3.7%) and phosphate (16.7%). …”
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