Sol–gel based thermal biosensor for glucose

Ramanathan, Kumaran; Jönsson, Birgitta Rees; Danielsson, Bengt

doi:10.1016/s0003-2670(00)01095-3

Cited by 57 publications

(24 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bassi Palmisano et al, 2000Marconi, 1996Palmisano et al, 2000Silber et al, 1994Ramanathan et al, 2001Sekine and Hall, 1998Sarkar et al, 1999Matsumoto et al, 1998Kwong et al, 2000Kelly et al, 2000Olschewski et al, 2000Miertus et al, 1998Katrlık, 1998 Niculescua et al, 2003Eggins et al, 1997Akyilmaz and Dinckaya, 2000. Prodromidis et al, 1997Mello and Kubota, 2002 In the area of food safety, enzymatic biosensors allow for identifying the presence of highly toxic organic contaminants and the presence of anti-nutritional elements that affect the food chain, either accidently or by intention.…”

Section: Discussionmentioning

confidence: 99%

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Benzi

Stefanazzi

Ferrero

2009

Chilean J. Agric. Res.

View full text Add to dashboard Cite

Rice weevil (Sitophilus oryzae L.) is a primary insect pest of stored grain. The development of resistance resulted in the application of synthetic insecticides. In recent years many plant essential oils have provided potential alternatives to currently used insect control agents. The Brazilian pepper tree (Schinus molle L. var. areira (L.) DC.) (Anacardiaceae) ) (Anacardiaceae) has different biological properties such as insecticidal activity. In this study, repellent, fumigant activity, nutritional indices, and feeding deterrent action were evaluated on S. oryzae adults. Filter paper impregnation was used to test fumigant toxicity, whereas treated whole wheat was used to evaluate repellent activity and a flour disk bioassay was done to evaluate feeding deterrent action and nutritional index alteration. Leaf essential oils showed repellent effects at both concentrations (0.04 and 0.4% w/w), while fruit essential oils lacked repellent activity. Both plant oils altered nutritional indices. Fruit essential oils had a strong feeding deterrent action (62%) while leaves had a slight effect (40.6%). With respect to fumigant activity, neither of the essential oils was found to be toxic. Resistance and toxicity problems of the synthetic insecticides have resulted in the necessity of finding more effective and healthier alternatives. Thus, essential oils are the most tested products presently (Papachristos and Stamopoulus, 2002; Umoetok and Gerard, 2003; Zhang et al., 2004; Tapondjou et al., 2005; Ferrero et al., 2006; Sánchez Chopa et al., 2006, Stefanazzi et al., 2006, Wang et al., 2006. Different biological activities of plant derivatives have been demonstrated for the control of stored grain pests (Golob et al., 1999; Rajendran and Sriranjini, 2008).The Brazilian pepper tree (Schinus molle L. var. areira (L.) DC.) is associated with agricultural crops in boundaries, windbreaks, riverbank protection, and watershed conservation. In popular medicine, it is use for its astringent, diuretic, antispasmodic properties among others. In pest control, it is used as a fumigant, repellent, and ovicide (Ruffínengo et al., 2005; Ferrero et al., 2006).The objective of the present study was to evaluate the fumigant, repellent and/or attractant, feeding deterrent activity, and the alterations in the nutritional physiology produced by the essential oils from leaves and fruits of S. molle var. areira on 3-to 4-day-old S. oryzae adults. V. BENZI et al. -BIOLOGICAL ACTIVITY OF ESSENTIAL OILS… MATERIALS AND METHODS InsectsThe insects came from a susceptible colony maintained in the Cátedra de Zoología Agrícola de la Universidad Nacional de Buenos Aires (UBA). They were bred in glass containers, 8 cm in diameter, 13 cm high, sealed with fine netting, maintained at 28 ± 1 ºC, 60-70% HR, a 12:12 photoperiod, and using whole wheat grains as food. Vegetal materialThe vegetal organs (leaves and mature fruits) of the pepper tree were collected during the summer period in Bahía Blanca city, Buenos Aires, Argentina (38°41' S; 62°17' ...

show abstract

Section: Discussionmentioning

confidence: 99%

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Benzi

Stefanazzi

Ferrero

2009

Chilean J. Agric. Res.

View full text Add to dashboard Cite

show abstract

“…6 shown in eq. 9 (Lineweaver-Burk linearization (Lineweaver and Burk, 1934; Ramanathan 1 et al, 2001)), when

\frac{1}{J_{Glu}}

is plotted vs .

\frac{1}{[Glu]}

.…”

Section: Methodsmentioning

confidence: 99%

The role of H2O2 outer diffusion on the performance of implantable glucose sensors

Vaddiraju

Burgess

Jain

et al. 2009

Biosensors and Bioelectronics

View full text Add to dashboard Cite

The performance of an implantable glucose sensor is strongly dependent on the ability of their outer membrane to govern the diffusion of the various participating species. In this contribution, using a series of layer by layer (LBL) assembled outer membranes, the role of outwards of H 2 O 2 diffusion through the outer membrane of glucose sensors has been correlated to sensor sensitivity. Glucose sensors with highly permeable Humic Acids/Ferric cations (HAs/Fe 3+ ) outer membranes displayed a combination of lower sensitivities and better linearities when compared with sensors coated with lesser permeable outer membranes (namely HAs/poly (diallyldimethylammonium chloride) (PDDA) and poly (styrene sulfonate) (PSS)/PDDA). On the basis of a comprehensive evaluation of the oxygen dependence of through these membranes, it these sensors in conjunction with the permeability of H 2 O 2 was concluded that the outer diffusion of H 2 O 2 is crucial to attain optimized sensor performance. This finding has important implications to the design of various bio-sensing elements employing perm-selective membranes.

show abstract

“…It is based on changes in enthalpy during the enzymatic oxidation of glucose recorded as a thermometric peak by a sensitive thermistor [64]. …”

Section: Glucose Biosensorsmentioning

confidence: 99%

Bioactive Sol‐Gel Hybrids

Livage¹,

Coradin²,

Roux³

2003

Functional Hybrid Materials

View full text Add to dashboard Cite

Sol–gel based thermal biosensor for glucose

Cited by 57 publications

References 26 publications

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

The role of H2O2 outer diffusion on the performance of implantable glucose sensors

Bioactive Sol‐Gel Hybrids

Contact Info

Product

Resources

About