evaluation of enzymatic browning

... involvement of POD in enzymatic browning of litchi fruit The success of commercial sulphite treatment in controlling litchi pericarp browning is an evidence for the hypothesis that the browning ... change and browning of fruit during cold storage of litchi fruit Postharvest Biology and Technology, 5, 245–250 Jiang, Y M., & Chen, F (1995b) Effect of spermidine on regulation of senescence of litchi ... require a better understanding of enzymatic browning Based on improved understanding, reliable technological approaches may be developed to control the browning of the fruit during storage, transport...

Ngày tải lên: 18/05/2014, 20:09

... 1989-JOURNAL OF FOOD SCIENCE-999 CONTROL OF ENZYMATIC BROWNING IN APPLE Table 5-Inhibition derivatives of enzymatic browning in Granny Smith juice by cyclodaxtrins (CD) and combinations of CD’ with ... CONTROL OF ENZYMATIC BROWNlNG Table -Inhibition of enzymatic water or % citric acida browning at cut surface IN APPLE of Red Delicious Treatmentb Expt A , 45.4 ... completion Browning by the uncomplexed PPO substrates might be Volume 54, No 4, 1989-JOURNAL OF FOOD SCIENCE-1001 CONTROL OF ENZYMATIC BROWNING IN APPLE controlled by the addition of AA or AA...

Ngày tải lên: 18/05/2014, 20:10

... may be indicative of the depletion of endogenous browning inhibitors such as ascorbic acid prior to the onset of browning (Ponting and Joslyn, 1948), or of changes in the albedo of the cut surface ... characteristic of juice besides the extent of browning Consequently, the use of L (or Y) rather than the a-value to monitor browning in the juice system is recommended In a recent study of browning ... 5, 1987-JOURNAL OF FOOD SCIENCE-1261 MEASUREMENT Table 4-Correlation OF BROWNING between reflectance IN RAW FRUITS and spectrophotometric measurements of browning Extent of browning at 30 Cultivar...

Ngày tải lên: 18/05/2014, 20:15

... Construction of T-DNA vectors carrying antisense PPO cDNAs In order to maximize the chances ofachieving ahigh level of antisense inhibition of PPO gene expression, we designed a series of antisense ... patatin promoter activity" Ofthe large population of transgenic PPO lines generated, a small proportion of lines were not amenable to microtuber induction (

Ngày tải lên: 18/05/2014, 20:10

... content of the peel of fruits coated with 1.0 and 2.0% chitosan and in Table Effects of chitosan coating on browning of pericarp of litchi fruit during storage at 4°C* Days of storage Browning ... extent of the browned area on each fruit pericarp on the following scale: 0=no browning; = slight browning or a few browning spots; = less than 1/4 browning; 3=1/4 – 1/2 browning; =more than 1/2 browning ... browning The browning grade was calculated using the following formula: Browning grade=S (browning scale ×proportion of corresponding fruit within each class) 2.3 Assays of contents of anthocyanin,...

Ngày tải lên: 18/05/2014, 20:10

... substrates of enzymatic browning but also some phenolic compounds which are bad substrates or even inhibitors of PPO Oxidation of Phenolic Compounds by Combination of PPO and POD Oxidation of mM 4-methylcatechol, ... affinity of pear PPO for its natural substrates (Gauillard and Richard-Forget, 1997), are in agreement with an effective involvement of pear POD in enzymatic browning Thus, in the presence of an ... favor of the use of quinones by POD to further oxidize the phenolic compound If we assumed that mol of quinone could be used by POD to oxidize mol of phenol, comparison between the amounts of quinones...

Ngày tải lên: 18/05/2014, 20:14

... demonstrated that gene expression profiling serves as an important indicator of potential toxic effects in the absence of apparent toxicity [16] Page of Collection of samples for gene expression analysis ... expression profiling of rat livers reveals indicators of potential adverse effects Toxicol Sci 2004, 80:193-202 doi:10.1186/1476-5926-10-8 Cite this article as: Fuentealba et al.: Evaluation of the ... enzymatic activity was used to verify the performance of the Hitachi 911 in measuring enzymatic activity in crude tissue Page of analysis of caspase and TUNEL stained slides Quantification was...

Ngày tải lên: 13/08/2014, 13:20

... observation of cyclic edema demonstrated the success of the treatment and the need for its control, but we had no idea of the high prevalence of edema in the more advanced grades of cellulite The lack of ... were excluded An evaluation for idiopathic cyclic edema is routinely made in the diagnosis of cellulite, in obesity and in other evident causes of clinical edema The diagnosis of idiopathic cyclic ... and with the combination of drugs control of edema was attained Discussion This study illustrates the association of idiopathic cyclic edema with more advanced cases of cellulite There are no...

Ngày tải lên: 25/10/2012, 10:51

... the prevalence of low back pain of 162% with an annual increase of 11.6% The widely held belief that most of the episodes of low back pain will be short-lived, with 80% to 90% of these attacks ... lumbar radiofrequency neurotomy.29-31 The exact mechanism of the therapeutic effect of lumbar facet joint nerve blocks is not known, whereas radiofrequency neurotomy causes denaturing of the nerves ... Classification of Chronic Pain; Descriptions of Chronic Pain Syndromes and Definition of Pain Terms, 2nd ed; Task Force on Taxonomy of the International Association for the Study of Pain Seattle:...

Ngày tải lên: 26/10/2012, 09:07

... in 88.4% of cases and in 93.8% of controls The informed consent document was signed by 98.4% of case mothers Personal identifiers (i.e name and address) were deleted from the record of cases ... keep them The personal data of controls are not recorded in the HCCSCA The fourth step was the evaluation of maternal infusion in five different aspects 1) The source of information All infusion ... of infusion according to the month of gestation in the case and controls groups is shown in Table There were two peaks of infusion treatments The first peak was connected with the treatment of...

Ngày tải lên: 02/11/2012, 11:08

... activity of disease in sarcoidosis or HP In addition, finding of encapsulated exudates may suggest desquamation of early stage of Masson body which implies possible diagnosis in a limited number of ... Patients’ group showing the highest rate of lymphocytes Of the 2260 patients, 488 (21.6%) showed a lymphocyte rate of higher than 40% Clinical diagnoses of these patients included sarcoidosis (22.1%), ... infiltration of mast cells implies histological feature of organization of collagenous matrices or interstitial fibrosis 10 Basophilic leukocytes were never found in the normal control and most of the...

Ngày tải lên: 03/11/2012, 11:48

... in materials evaluation including definitions of materials evaluation, purposes for materials evaluation, types of materials evaluation, materials evaluators, models for materials evaluation, ... purposes of the course as well as the available facilities and constraints of a particular situation 1.2 Materials Evaluation 1.2.1 Definitions of Materials Evaluation There are many ways of defining ... research 1.2.3 Types of Materials Evaluation In materials evaluation literature different authors offer different ways of categorizing it Robinson (1991:59) classifies materials evaluation into three...

Ngày tải lên: 07/11/2012, 14:50

... evaluation, etc Teacher evaluation task evaluation, etc Learners evaluation evaluation of sequencing practice, ect evaluation of levels of participation etc Figure 3: Macro- and micro -evaluation in language ... purpose of the evaluation 1.2.2 Types of programme evaluation According to Stufflebeam (1971), there are four types of programme evaluation which are identified as: context evaluation, input evaluation, ... ESP (definition of ESP, classification of ESP and the development of ESP), evaluation (terminology definition, types of programme evaluation, purposes for evaluation, criteria for evaluation and...

Ngày tải lên: 07/11/2012, 14:54

... the discretization steps of Ds became different in the course of the test For the next steps of Dsn calculated as above, excess of the pore water pressure Evaluation of consolidation parameters ... used formulae and the Fig Comparison of different methods of cv estimation in the context of theoretical analysis of the CL consolidation process Evaluation of consolidation parameters in CL tests; ... the changes of Hi length of the drainage path This point Fig Comparison of cv characteristics estimated by various methods A — estimation of cv value by different formula; B — changes of cv v l...

Ngày tải lên: 22/03/2013, 15:01

... INSTITUTE OF EDUCATION AND RESEARCH UNIVERSITY OF PESHAWAR (2005) EVALUATION OF INSTRUCTIONAL METHODS USED IN TEACHING OF ENGLISH IN SECONDARY SCHOOLS OF HARIPUR DISTRICT Submitted ... sphere of this mortal life APPROVAL SHEET The thesis entitled Evaluation of instructional method used in teaching of English In secondary schools of Haripur District Accepted by the faculty of ... 1-3 I 1.1 Background of the Study 1.2 Statement of the Problem 1.3 Objectives of the Study 1.4 Significance of the Study 1.5 Hypothesis 1.6 Delimitation of the Study II REVIEW OF RELATED LITERATURE...

Ngày tải lên: 10/04/2013, 10:37

... works Evaluation is implemented in phases of investment process: Inception evaluation; Midterm evaluation; Completion evaluation; Impact evaluation or after project evaluation Monitoring and Evaluation ... implementation Evaluation - Internal evaluation - External evaluation - Implementation - Results - Impacts - Inception evaluation - Midterm evaluation - Completion evaluation - Impact evaluation ... Ministry of Culture, Sports and Tourism IS Information System IT Information Technology M&E Monitoring & Evaluation MPI Ministry of Planning and Investment MOF Ministry of Finance MBA Master of Business...

Ngày tải lên: 18/04/2013, 16:01

... 1.  FT-IR spectra of PA (a) and pullulan (b) 500 Stability and in vivo evaluation of pullulan acetate   555 (2008) also reported that the smaller size of NPs may be in favor of longer circulation ... integration value of acetyl protons at 1.8–2.2 ppm and B is that of OH protons and H-1 to H-6 protons of pullulan moiety observed at more than 3.5 ppm Preparation and characterization of PANs and PA/EPI ... informahealthcare.com by University of Technology Sydney on 03/01/11 For personal use only Stability and in vivo evaluation of pullulan acetate   553 aqueous media The hydrophobic core of these selfassembled...

Ngày tải lên: 23/04/2013, 21:38