strong inhibition of plant pathogens‚ Rhizoctonia sp. Botryosphaeria rhodina and two strains of Alternaria sp. (Alternaria sp. (A1) and Alternaria sp. (A2) - tomato wilt fungi) which was mainly due to presence of fungitoxic phenolic compound eugenol. When this eugenol was further subjected to agar diffusion assay it shows strong efficacy against Alternaria sp. (A1) and Penicillium chrysogenum with MIC value 0.16 and 0.31 mg/disc‚ respectively (Faria et al.‚ 2006). The plant fraction and essential oil
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REACTIONS OF HYDROCARBONS Vanessa P. Manibpel De La Salle University - Dasmariñas ABSTRACT Five substances namely Hexane‚ Eugenol‚ Unknown hydrocarbon 1‚ Unknown hydrocarbon 2‚ and Acetylene gas was used for the selective reactivity of hydrocarbons to functional group tests; Bayer’s test‚ Bromine test light‚ Bromine test dark‚ and Tollen’s test. In Bayer’s test‚ only Acetylene‚ Eugenol and Unknown hydrocarbon 2 reacted positively and the rest retain the purplish color of KMnO4. On the other hand‚ the
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(24.09.2007) CONTENTS Introduction Classification of Terpenoids Isolation of mono and sesquiterpenoids General properties of Terpenoids General methods of structure elucidation Terpenoids Citral Menthol Camphor Eugenol Keywords Terpenes‚ isoprene‚ citral‚ menthol‚ camphor and eugenol 1 Introduction There are many different classes of naturally occurring compounds. Terpenoids also form a group of naturally occurring compounds majority of which occur in plants‚ a few of them have also been
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benzene ring. The peaks occurring 1650 cm-1 showed the constituent contained at least one C=C bond between Csp2 molecules (Figure 1). After elimination the last choice of the compounds using the IR‚ the major constituent of clove oil was identified as eugenol (Diagram
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Department College of Science‚ De La Salle University-Dasmarinas ABSTRACT Five substances which are Hexane‚ Eugenol‚ Unknown hydrocarbon 1‚ Unknown hydrocarbon 2‚ and Acetylene gas was used for the selective reactivity of hydrocarbons to functional group tests; Bayer’s test‚ Bromine test light‚ Bromine test dark‚ and Tollen’s test. In Bayer’s test‚ only Acetylene‚ Eugenol and Unknown hydrocarbon 2 reacted positively and the rest retain the purplish color of KMnO4. On the other hand‚ the
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There are five different types of cement in the dental field each is versatile in their properties‚ uses‚ and mixing techniques. Many were traditionally used for routine cementation through the nineteen ninety’s and since have been replaced by newer makeup and mixing techniques. The selection of cement for a specific procedure requires knowledge of the chemical and physical properties of each particular cement for the specific restorative process to be performed. This first cement I’m going to discuss
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Centre for Foundation Studies‚ UTAR Credit Hour: 4 credit hours Unit code: FHSC1114 Unit title: PHYSICAL CHEMISTRY Course of study: Foundation in Science Contact Hours: 2 lecture contact hours per week for the duration of 14 weeks. 1 tutorial contact hour per week for the duration of 12 weeks. 2 practical contact hours per week for the duration of 10 weeks. Mode of delivery: Lecture‚ tutorial & experiment Attendance for lectures‚ tutorials and experiments are compulsory for every student
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CHAPTER 1 (CLOVE) INTRODUCTION (CARDAMOM) 1.INTRODUCTION Strong consumer demand for safe and high-quality foods can be attributed in part to the widespread availability and accessibility of quality health data and information. There are also new concerns about food safety due to increasing occurrence of new food-borne disease caused by pathogenic microorganisms. This raises considerable challenges‚ particularly since there is increasing unease regarding the use of chemical
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In the Laboratory Investigation of Imposter Perfumes Using GC–MS W Kelly A. Mowery‚ Daniel E. Blanchard‚ Stephanie Smith‚ and Thomas A. Betts* Department of Physical Sciences‚ Kutztown University of PA‚ Kutztown‚ PA 19530; *betts@kutztown.edu Fragrances are of keen interest to most students and are the products of an enormous chemical industry (1). In 1999‚ the global market for perfumes and fragrances was valued at $19.8 billion (2)‚ with the “knockoff ” perfume industry comprising
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Chapter I: Background of the study: Nowadays people are focusing in herbal plants especially those who are common in the environment. One of the example is the guava plant (Psidium guajava Linn). Based on research this plant is good for healing and treating wounds and other skin infections. So in my research I wan’t to make a bathing soap out of it‚ cause I know that it is effective. People‚ researchers‚ scientists were focusing to medicinal plants. They want to prove that there are plants
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