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Institution

Central Tuber Crops Research Institute

FacilityThiruvananthapuram, Kerala, India
About: Central Tuber Crops Research Institute is a facility organization based out in Thiruvananthapuram, Kerala, India. It is known for research contribution in the topics: Starch & Fermentation. The organization has 475 authors who have published 587 publications receiving 10285 citations.


Papers
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Book ChapterDOI
30 Jun 2010

32 citations

Journal ArticleDOI
TL;DR: Good agreement between measured and predicted yields was observed while calibrating the QUEFTS model, which shows that the model can be used for making site-specific NPK recommendations for cassava in major cassava production regions of India.
Abstract: Conventional fertilizer-management strategy results in decreased fertilizer-use efficiency and unbalanced nitrogen (N)–phosphorus (P)–potassium (K) applications. The quantitative evaluation of fertility of tropical soils (QUEFTS) model was used for determining region-specific balanced NPK uptake requirements and recommendations for a target yield of cassava. Minimum and maximum internal efficiencies of N, P, and K were estimated as 35 and 80 for N, 250 and 750 for P, and 32 and 102 for K (kg tuberous root per kg nutrient removed). Linear increases in tuberous root yield with N, P, and K uptakes of 17.6, 2.2, and 15.6 kg N, P, and K per 1000 kg tuberous root yield were observed. Relationships between soil supply and soil chemical properties and between fertilizer nutrient recovery efficiencies with their rates of application were developed for major cassava-production regions. Good agreement between measured and predicted yields was observed while calibrating the model, which shows that the model can be us...

31 citations

Journal ArticleDOI
TL;DR: In this paper, the textural characteristics of taro (Colocasia esculenta L. Schott) cormels during storage at tropical ambient conditions (31.8 to 44.9 °C, 30% to 50% relative humidity [RH]), evaporative cooled room (EC room) (26.2 to 33.9°C, 59% to 92% RH), and refrigerator (10 °C and 65% RH) and cooking were measured under compression/penetration and cutting modes.
Abstract: Textural characteristics of taro (Colocasia esculenta L. Schott) cormels during storage at tropical ambient conditions (31.8 to 44.9 °C, 30% to 50% relative humidity [RH]), evaporative cooled room (EC room) (26.2 to 33.9 °C, 59% to 92% RH), and refrigerator (10 °C, 65% RH) and cooking were measured under compression/penetration and cutting modes. After 20 d of storage, physiological loss in weight was maximum at ambient condition followed by EC room and refrigerated condition. The textural parameters (that is, hardness, toughness, cutting force, and cutting energy) significantly increased with storage period whereas effect of storage condition was significant only for toughness and cutting energy (P < 0.001). Most of the rheological characteristics were lowered for the flours prepared from the stored samples. Fractional conversion technique and time step effect parameters were employed to model the kinetics of texture degradation during cooking. The mode of measurement of texture characteristics influenced the kinetic model, that is, cutting force, was described with 1st-order kinetic model and hardness by dual mechanism of 1st order.

31 citations

Journal ArticleDOI
26 Aug 2014-PLOS ONE
TL;DR: The rhabditid entomopathogenic nematode associated Bacillus cereus and the antifungal compounds produced by this bacterium could be used as a biocontrol agents against postharvest fungal disease caused by Aspergillus species.
Abstract: The rhabditid entomopathogenic nematode associated Bacillus cereus and the antifungal compounds produced by this bacterium were evaluated for their activity in reducing postharvest decay of peanut kernels caused by Aspergillus species in in vitro and in vivo tests. The results showed that B. cereus had a significant effect on biocontrol effectiveness in in vitro and in vivo conditions. The antifungal compounds produced by the B. cereus were purified using silica gel column chromatography and their structure was elucidated using extensive spectral analyses. The compounds were identified as diketopiperazines (DKPs) [cyclo-(L-Pro-Gly), cyclo(L-Tyr-L-Tyr), cyclo-(L-Phe-Gly) and cyclo(4-hydroxy-L-Pro-L-Trp)]. The antifungal activities of diketopiperazines were studied against five Aspergillus species and best MIC of 2 µg/ml was recorded against A. flavus by cyclo(4-hydroxy-L-Pro-L-Trp). To investigate the potential application of cyclo(4-hydroxy-L-Pro-L-Trp) to eliminate fungal spoilage in food and feed, peanut kernels was used as a food model system. White mycelia and dark/pale green spores of Aspergillus species were observed in the control peanut kernels after 2 days incubation. However the fungal growth was not observed in peanut kernels treated with cyclo(4-hydroxy-L-Pro-L-Trp). The cyclo(4-hydroxy-L-Pro-L-Trp) was nontoxic to two normal cell lines [fore skin (FS) normal fibroblast and African green monkey kidney (VERO)] up to 200 µg/ml in MTT assay. Thus the cyclo(4-hydroxy-L-Pro-L-Trp) identified in this study may be a promising alternative to chemical preservatives as a potential biopreservative agent which prevent fungal growth in food and feed. To the best of our knowledge, this is the first report demonstrating that the entomopathogenic nematode associated B. cereus and cyclo(4-hydroxy-L-Pro-L-Trp) could be used as a biocontrol agents against postharvest fungal disease caused by Aspergillus species.

31 citations

Journal ArticleDOI
TL;DR: Luffa sponge was found to be 21% and 51% more effective in enzyme yield than agar–agar and polyacrylamide, respectively and response surface methodology was used to evaluate the effect of three main variables, i.e., incubation period, pH, and temperature on enzyme production with immobilized luffa cells.
Abstract: The purpose of this investigation was to study the effect of Streptomyces erumpens cells immobilized in various matrices, i.e., agar–agar, polyacrylamide, and luffa (Luffa cylindrica L.) sponge for production of α-amylase. Luffa sponge was found to be 21% and 51% more effective in enzyme yield than agar–agar and polyacrylamide, respectively. Response surface methodology was used to evaluate the effect of three main variables, i.e., incubation period, pH, and temperature on enzyme production with immobilized luffa cells. The experimental results showed that the optimum incubation period, pH, and temperature were 36h, 6.0, and 50 °C, respectively. The repeated batch fermentation of immobilized cells in shake flasks showed that S. erumpens cells were more or less equally physiologically active on the support even after three cycles of fermentation (3,830–3,575 units). The application of S. erumpens crude enzyme in liquefying cassava starch was studied. The maximum hydrolysis of cassava starch (85%) was obtained with the application of 4ml (15,200 units) of crude enzyme after 5 h of incubation.

31 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20231
20225
202129
202032
201927
201823