Cyanide Reduction, Functional and Sensory Quality of Gari as Affected by pH, Temperature and Fermentation Time

2010 ◽  
Vol 9 (10) ◽  
pp. 980-986 ◽  
Author(s):  
C.I. Owuamanam ◽  
J.O. Iwouno ◽  
N.C. Ihediohanm ◽  
L.I. Barber
2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Jingjing Li ◽  
Yuanyuan Zhao ◽  
Yanqing Qin ◽  
Hongzhi Shi

Abstract Background To explore the optimum fermentation conditions for tobacco leaves and also screen the microbiota and metabolites that are beneficial for fermentation. Methods Tobacco leaves were fermented at 25 °C, 35 °C, and 45 °C for 2, 4, and 6 weeks, respectively. For identification of the best fermentation temperature, physicochemical properties and sensory quality of fermented tobacco were investigated. Subsequently, based on the appropriate temperature, 16 s rRNA sequencing and metabolomics analysis of tobacco were performed to monitor the change of microbes and metabolites during fermentation process (from 2 to 6 weeks). Results Sensory quality analysis indicated that fermentation at 45 °C for 6 weeks represented the optimum condition. Metabolomics analysis showed that a total of 415 metabolites were annotated. The increase of fermentation period led to significant changes of metabolites. Results revealed an increase in concentration of L-phenylalanine and sphingosine as well as decreased concentration of betaine and phytosphingosine with the prolongation of fermentation period (2 to 6 weeks). Distinct changes in the microbiota were also observed with prolongation of the fermentation time. Results revealed that Pseudomonas, Pantoea, and Burkholderia were dominant bacteria in fermentation at 45 °C for 6 weeks. With the extension of the fermentation time, the abundance of Pseudomonas increased, while that of Sphingomonas and Methylobacterium decreased. Furthermore, microbiota profiles were tightly relevant to the altered metabolites, especially compounds involved in the sphingolipid metabolism. Conclusion Suitable fermentation conditions were 45 °C for 6 weeks; phytosphingosine and sphingosine might affect tobacco fermentation via the sphingolipid metabolism pathway. This study provides a theoretical basis for guiding tobacco fermentation and gives insights into reducing harmful substances during tobacco fermentation.


2018 ◽  
Vol 22 (2) ◽  
pp. 67-75 ◽  
Author(s):  
Helen Weldemichael ◽  
Shimelis Admassu ◽  
Melaku Alemu

Abstract Response surface methodology (RSM) was used for optimization of enset fermentation process. Two numerical (time and amount of starter culture) and one categorical variable (types of starter strain) was used for evaluation of sensory quality of kocho. The physicochemical properties, proximate composition and color of kocho product were also analyzed. It was found that the coefficient of determination (R2) of the response variables were greater than 80% described that high percentage of the variability was defined by the model. These findings revealed that fermentation time, amount of starter culture and types of starter strain affected the sensory attributes of kocho. The preferred sensory quality of kocho was produced using 2% L. plantarum as starter strain at 6 days of fermentation time.


2018 ◽  
Vol 1 (32) ◽  
pp. 68-76
Author(s):  
Nguyen Bao Pham ◽  
Hoa Thai Ma ◽  
Duyen Thi Cam Pham

Yogurt is a food product fermented from milk by Streptococcus thermophilus (S. thermophilus) and Lactobacillus bulgaricus (L. bulgaricus), which is very good for health. This study focuses on the evaluation of the ratio of condensed milk / Non-sugar fresh milk from 1/1.5 - 1/2 - 1/2.5, the ratio of the puree of soursop pulp added (5-25%), the fermentation temperature (from 41 to 47 oC) and fermentation time (from 6 to 8 hours) on the fermentation ability of yogurt in order toidentify the suitable fermentation condition for producing yogurt with the best sensory quality and the suitable sour taste. Additionally, this study also  investigates the effect of temperature and time of the fermentation process on the quality of yogurt. The results showed that, with the ratio of condensed milk / Non-sugar fresh milk = 1/2, the sensory properties of yogurt were very good. Besides, with the added puree of 5% and fermentation temperature of 44 oC within 7 hours, the sensory quality of yogurt was the best (with the point of 4.7/5 by the quality description scale) and the Donic degree of the product reached 86.3 that was suitable for yogurt (70 to 90 oD)


2018 ◽  
Vol 2 ◽  
pp. 59-65
Author(s):  
Geeta Bhattarai ◽  
Sanjay Bhandari ◽  
Dambar Bahadur Khadka

Masyaura, an ethnic, fermented and dried, cone shaped, black or green gram product, is prepared by Nepalese people living in the Himalayas. Masyaura is especially prepared from split black gram (Phaseolus mungo) and Colocasia (Colocasia esculenta) or radish and ash gourd depending upon the availability of raw materials. The taste and texture are the fundamental characteristics of Masyaura. Breakage or loss of integrity after drying, during handling, packing and cooking are observed as a common problems of Masyaura. In this study, effect of addition of mashed potato on physiochemical and sensory quality of Masyaura was studied. Masyaura prepared by using black gram and colocasia tuber in the ratio 2:1 with fermentation time of 2 h was taken as control. Black gram was partially replaced by different proportion of mashed potato (6.25, 12.5, 18.75 and 25 parts by weight) to study the effect on physiochemical and sensory quality of Masyaura. Rehydration ratio, bulk density and disintegration time of Masyaura varied from 2.60:1 to 3.45:1, 510 to 654 kg/m3 and 35.75 to 45.91 min respectively. Masyaura prepared by incorporating mashed potato had higher bulk density, longer disintegration time and lower rehydration ratio compared to control. Sensory evaluation showed that 18.75 parts mashed potato incorporated Masyaura had the best sensory quality of all the proportions studied. Incorporation of mashed potato in partial replacement of black gram could significantly improve the textural property of Masyaura.


2007 ◽  
Vol 22 (3) ◽  
pp. 525-533
Author(s):  
Katarzyna Tkacz ◽  
Agnieszka Troszyńska ◽  
Grzegorz Lamparski
Keyword(s):  

2010 ◽  
Vol 6 (1) ◽  
pp. 36
Author(s):  
Silvana Dinaintang Harikedua

The objective of this study was to investigate the effect of ginger extract addition and refrigerate storage on sensory quality of Tuna through panelist’s perception. Panelists (n=30) evaluated samples for overall appearance and flavor attribute using hedonic scale 1–7. The sample which is more acceptable by panelists on flavor attributes having 3% gingers extract and storage for 3 days. The less acceptable sample on flavor attribute having 0% ginger extract and storage for 9 days. On the other hand, the sample which is more acceptable by panelists on overall appearance having 0% ginger extract without storage treatment. The less acceptable sample on overall appearance having 3% ginger extract and storage for 9 days.


Meat Science ◽  
2013 ◽  
Vol 94 (1) ◽  
pp. 105-114 ◽  
Author(s):  
I. Etaio ◽  
P.F. Gil ◽  
M. Ojeda ◽  
M. Albisu ◽  
J. Salmerón ◽  
...  

Author(s):  
Safinaj Huq ◽  
Pabitra Chandra Das ◽  
Md. Ahmadul Islam ◽  
Md. Fahad Jubayer ◽  
Thottiam Vasudevan Ranganathan ◽  
...  

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1610
Author(s):  
Wiesław Przybylski ◽  
Danuta Jaworska ◽  
Katarzyna Kajak-Siemaszko ◽  
Piotr Sałek ◽  
Kacper Pakuła

An increase in the consumption of poultry meat has been observed due to its availability, nutritional value, and delicate flavor. These characteristics make it possible to prepare, with the use of spices and other additives, many different dishes and products for increasingly demanding consumers. The sous-vide technique is increasingly being used to give new sensory attributes to dishes in gastronomy. The study aimed to assess the impact of the heat treatment method, i.e., the sous-vide method, as compared to traditional cooking, on the sensory quality of poultry meat, as well as the efficiency of the process with regard to technological quality. The cooking yield with the sous-vide method of processing poultry meat was higher than with the traditional method of cooking in water (88.5% vs. 71.0%, respectively). The meat was also found to be redder (a* = 254 vs. 074) and less yellow (b* = 1512 vs. 1649), as well as more tender. The sensory quality of chicken breast meat obtained by the sous-vide method was higher in terms of attributes such as color tone, tenderness, juiciness, and overall quality. At the same time, it was lower in terms of the odor of cooked meat and the flavor of cooked meat as compared to meat subjected to traditional cooking.


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