minutes, respectively. >> Pineapples are available all year round since they are unseasonal fruits. << ‘Oso grande’ jam had the lowest anthocyanin concentration (110 mg/g f.w), higher monomeric pigment degradation during processing and storage, highest pH, least desirable color score from the sensory panel and shortest shelf-life. Pineapple may be consumed fresh, canned, juiced, and are found in a wide array of food stuffs - dessert, fruit salad, jam, yogurt, ice cream, candy, and as a complement to meat dishes. Pineapple jam is a sweet, juicy spread that is slightly more tart than the average berry jam. All rights reserved. CaCl2-treatment had an even stronger effect than sucrose on the above compounds except lignin. Time series forecasting T&L kit (manual) aimed at assisting students in basic time series analysis such as trend and moving average analysis. Due to the continuous harvesting of the fruit, the retailers and farmers had to find a solution such as the processing of pineapple into jam, to treat the unsuccessfully sold pineapples. 495 0 obj <>/Filter/FlateDecode/ID[<2382D93209894BBDB852433AF1D67319>]/Index[477 34]/Info 476 0 R/Length 99/Prev 1351990/Root 478 0 R/Size 511/Type/XRef/W[1 3 1]>>stream a !1AQa"q�2���B#$Rb34�r�C%�S��cs5��&D�TdE£t6�U�e���u��F'���������������Vfv��������7GWgw��������(8HXhx�������� )9IYiy�������� /Width 127 Otherwise, vegetative cells and spores may be killed by osmotic shock or remain dormant when exposed to high aw associated with diluents and media routinely used for mycological analyses. /Height 107 47 Influence of packaging conditions on fresh-cut ‘Gold’ pineapple shelf-life were studied during 20 d of storage at 5 °C. If. Therefore. The behavior of yeasts and molds as influenced by water activity (aw) is reviewed. The three-level factors included were the CaCl2concentration of the dipping solution, the dipping time and the temperature of the solution. percentage errors, where less than 10% error is considered as a valid result. fruit jam processing which requires longer, shelf life of fresh-cut pineapple (Ananas comosus, the optimization of chromatographic systems. Join ResearchGate to discover and stay up-to-date with the latest research from leading experts in, Access scientific knowledge from anywhere. The usage of domestic microwave oven for the pineapple jam production also results in acceptable pineapple jam with 62% of consumers' preference compared to conventional fruit jam sold in the marketplace. Moreover, from the time–temperature tolerance chart, a Q10 value of 4.48 was derived. /BitsPerComponent 8 *:JZjz���������� �� ? Thus, this study aims to optimise the microwave-assisted processing conditions for producing pineapple jam which could reduce water activity and meets minimum requirement for pH and total soluble solids contents of fruit jam. determined as dependent variables. The combined effect of pH, temperature, particle size and time on the dye adsorption was investigated and optimized using response surface methodology. of this study was to determine optimum microwave-assisted processing conditions Complete removal (100%) was observed for both the dyes using the hybrid adsorbent. The power and time of the microwave processing were chosen as the factors, while the water activity, pH and total soluble solids (TSS) content of the pineapple jam were determined as responses to be optimised. /Length 9 0 R The range of aw permitting germination of spores is greatest at an optimum temperature, but optimum availability of nutrients tends to broaden the range of aw and temperature at which germination and growth will occur. designed using full-factorial experimental design, which the power and time of the Students successfully applied their training and were able to not only get feedback on the specific food characteristics of their products that could be improved but were also able to conclude that the products they presented to the panelists were acceptable and that the panelists had a highly positive attitude towards eating the products and even purchasing if these were to become available in the market. The. %PDF-1.5 %���� function of the hydrogen ion concentration in the f. high acid foods and foods with pH greater than 4.6 are known as low acid foods. h�bbd```b``��� �iX�D2��E:@$w�Z"�m@$c ��j���^g��@�џ�.������c`bd`����H5�?��g� ?�D The results obtained by the discontinuous approach showed that the electronic nose was able to discriminate between several samples and to monitor the changes in volatile compounds correlated with quality decay. The two-way interaction was chosen for. Strawberries were either dipped in water–sucrose solutions or were sprinkled with crystallized sucrose. The report presents how students used their training on sensory evaluation methods and analysis and applied it to improving and predicting acceptability of new innovative products that they developed. The microwave treatment was optimised to achieve ideal properties of pineapple jam. Thus, the objective of this study was to determine optimum microwave-assisted processing conditions for producing pineapple jam which could reduce water activity, and meets minimum requirement for pH and total soluble solids contents of fruit jam. Fresh-cut fruit pieces were packed in polypropylene trays (PP) and wrapped with 64 μm polypropylene film under active (high 40% or low oxygen, 11.4%) or passive modified atmospheres (air or cut fruit coated with 1%, w/v alginate). A 24 full factorial central composite design was successfully employed for experimental design and analysis of the results. Further studies are needed to evaluate the sensory aspects, as well as to characterize the flesh translucency phenomenon and reduce juice leakage of fresh-cut pineapple. To evaluate the potential of some Malaysian medicinal plants as anti-gout agents using in vitro and in vivo studies. ! Department of Technology and Heritage, (UTHM), 86400 Parit Raja, Batu Pahat, Johor, Malaysia, Pineapple is one of the unseasonal tropical fruits, which its. domestic microwave oven for the pineapple jam production also results in acceptable As long as you are filling hot jars with hot jam and topping with a hot lid, and everything has been sterilized, there is no need for further processing (Note: this only applies to jam. microwave processing were chosen as the independent variables, while the water The effect of cultivar, processing and storage on jam pigments, instrumental color (L*, a*, b*) and consumer preference were also determined. Microwave processing food products can produce a. microwave processing in comparison to conventional method. /ColorSpace /DeviceRGB The experiment was. the pineapple jam decreased as the TSS increased and vice versa. /Filter /FlateDecode The microwave treatment on the pineapple jam was able to give significant effect on the water activity and TSS content of the pineapple jam. The sugar mol, rather than fungi, whereas gram-negative bacteria have higher re, spoiled by growth of yeasts and moulds rather than growth of bacteria. pineapple production and processing Sep 09, 2020 Posted By Evan Hunter Library TEXT ID c35ad421 Online PDF Ebook Epub Library on e among important organic products within the segment of preserved fruit for industrial use dried fruit is mainly used as pineapple pomace arising from the processing Changes in headspace composition, titratable acidity, pH, soluble solids content, juice leakage, color, texture, and microbial growth were evaluated over time.
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