scholarly journals Effects of Cassava Chips Fermentation Conditions on The Produced Flour Properties

2016 ◽  
Vol 16 (1) ◽  
pp. 51
Author(s):  
Angina Meitha ◽  
Yazid Bindar ◽  
M.T.A.P. Kresnowati
Keyword(s):  
Fermentation Process ◽  
Amylose Content ◽  
The Other ◽  
Cassava Flour ◽  
Dextrose Equivalent ◽  
Operation Conditions ◽  
Other Hand ◽  
Flour Properties ◽  
Effects Of Temperature ◽  
As Solubility

A fermentation process to produce soft-texture and low cyanogenic content cassava flour had been studied, in particular the effects of temperature, circulation of the fermentation media, and chips size, on fermented cassava flour (fercaf) properties. Fermentation was shown to affect properties of cassava flour: reducing the cyanogenic content, swelling power, as well as solubility, whereas on the other hand increasing the amylose content and correspondingly the measured DE. Further, the properties of the produced flour were affected by the implemented fermentation operation conditions. Fermentation temperature was found to significantly affect amylose content. Media circulation was found to significantly affect the measured Dextrose Equivalent. On the other hand, the size of cassava chips significantly affected the cyanogenic content and solubility of the flour

scholarly journals Effects of Retting Media Circulation and Temperature on the Fermentation Process in Soft-Texture and Low Cyanogenic Content Cassava Flour Production

2015 ◽  
Vol 14 (2) ◽  
pp. 67
Author(s):  
M.T.A.P. Kresnowati ◽  
Yazid Bindar ◽  
Lienda Aliwarga ◽  
Dianika Lestari ◽  
Nicholaus Prasetya ◽  
...  
Keyword(s):  
Fermentation Process ◽  
Morphological Changes ◽  
The Other ◽  
Small Scale ◽  
Fermentation Performance ◽  
Cassava Flour ◽  
Fermentation Temperature ◽  
Other Hand ◽  
Effects Of Temperature ◽  
Flour Production

A fermentation process to produce soft-texture and low cyanogenic content cassava flour had been studied, in particular the effects of temperature, circulation of the retting media, and scale to the reduction of cyanogenic content and the structure of cassava. Although the effects of retting media circulation and an increase in the fermentation temperature on cyanogenic content reduction were not clearly seen, they led to more damaged cassava structure and thus improving the overall cassava flour production. On the other hand small scale fermentation led to both cyanogenic content reduction and morphological changes, giving better fermentation performance.

Effects of Trehalose and Ethanol on Yeast Cytosolic Pyrophosphatase

1999 ◽  
Vol 54 (3-4) ◽  
pp. 186-190 ◽  
Author(s):  
Dahabada Helena José Lopes ◽  
José Roberto Meyer-Fernandes ◽  
Mauro Sola-Penna
Keyword(s):  
Fermentation Process ◽  
Stress Condition ◽  
The Other ◽  
Dependent Manner ◽  
Control Activity ◽  
Other Hand ◽  
Ethanol Ethanol ◽  
Stress Protectant ◽  
Dose Dependent

Trehalose has been described to protect several enzymes against destabilizing conditions. This sugar is naturally accumulated by yeast as a stress protectant. A common stress condition that yeast is normally submitted is the presence of ethanol, the by-product of fermentation process of several yeast. In this paper we show the effects of trehalose and ethanol, alone or together, on yeast pyrophosphatase, and the effects of these compounds on inhibition and unfolding of pyrophosphatase promoted by urea. We show that both trehalose and ethanol inhibit pyrophosphatase in a dose-dependent manner, and that the presence of ethanol does not modify the inhibition promoted by trehalose as well as the presence of trehalose does not modify the inhibition promoted by ethanol. The effects of trehalose on pyrophosphatase are completely reversible, but the inhibition caused by ethanol was only partially reversible. Incubation of pyrophosphatase with 10% (v/v) ethanol promoted an inhibition of 15%, and the control activity was completely recovered after removal of ethanol. On the other hand, when pyrophosphatase was incubated with 20% (v/v) ethanol an inhibition of 40% of the control activity was observed which persisted after removal of ethanol. Ethanol also potentiates the inhibition of pyrophosphatase promoted by urea, and contributes for an irreversible inactivation and unfolding of pyrophosphatase in the presence of urea. Trehalose, that protects this enzyme against the inhibition and unfolding promoted by the chaotropic compound urea, was inefficient to protect against the effects of ethanol. Trehalose was also efficient to prevent an irreversible inactivation induced by urea.

scholarly journals KADAR AMILOSA, TINGKAT KEKERASAN, DAN SIFAT SENSORI STICK DENGAN SUBSTITUSI TEPUNG GADUNG (Dioscorea hispida Dennst)

2020 ◽  
Vol 10 (1) ◽  
pp. 34
Author(s):  
Rinesti Dwiyaning Putri ◽  
Wikanastri Hersoelistyorini
Keyword(s):  
Wheat Flour ◽  
Local Food ◽  
Amylose Content ◽  
Food Products ◽  
The Other ◽  
Raw Material ◽  
Snack Foods ◽  
Hardness Level ◽  
Substitution Level ◽  
Other Hand

Stick is one type of snack that is quite popular. The public's fondness for this stick makes it one of the most widely produced snack foods. The main raw material for stick making is wheat flour, where the import of wheat flour in Indonesia continues to increase. Therefore, the effort to reduce the need of wheat flour needs to be done, among others, by substituting wheat flour with local food products such as gadung flour from gadung tuber (Dioscorea hispida Dennst). Umbi gadung contains a high enough carbohydrate that is equal to 18%, for that gadung tuber potentially as a source of carbohydrates. However, on the other hand the gadung bulb contains HCN levels. To reduce the levels of HCN on the gadung tubers will be modified making of flour gadung using cabbage fermentation extract. The purpose of this research is to know the level of amylose, the hardness level and the sensori character and the best treatment stick with the substitution of gadung flour with variation of the addition of the flour of gadung as much as 0%, 10%, 20%, 30% and 40%. The result showed that there was no significant effect (p <0.05) on the amyloose substitution level and the stick hardness, while the sensory character showed no significant effect (p> 0,05) on the substitution stick of the gadung flour. The best result of this research is stick with substitution of flour of gadung with the formulation of 10% flour of gadung with result of amylose content 58,47%, hardness 0,61N, sensory 3,20 (like) and HCN level 37,45 ppm. Top 10% gadung stick criteria are yellow-brown, fragrant aroma, crispy texture and savory taste.

A STUDY OF THE EFFECTS OF TEMPERATURE AND OTHER FACTORS UPON THE GERMINATION OF VEGETABLE CROPS: III. VEGETABLE VINE CROPS

1960 ◽  
Vol 40 (4) ◽  
pp. 596-606
Author(s):  
W. E. Torfason ◽  
I. L. Nonnecke
Keyword(s):  
Seed Germination ◽  
The Other ◽  
Similar Reaction ◽  
Vegetable Crops ◽  
Watermelon Seed ◽  
Fungal Activity ◽  
Other Hand ◽  
Effects Of Temperature

A study was made of the effects of temperature and duration of exposure upon the germination of cucumber, muskmelon, and watermelon seed. Seeds of four varieties of each crop were germinated at controlled temperatures by rolled-towel method. Muskmelon seed germination was significantly reduced as temperature decreased from 60°F. through 55°, 50° and 45°F. On the other hand, germination of cucumber and watermelon seed was not significantly altered by temperature. Prolonging the duration of exposure to 15 or 22 days resulted in significant reductions in the germination of watermelons but not of the other crops. The interaction of temperature with duration of exposure caused significant differences in the germination of the three crops. At 45° and 50°F., germination decreased generally as exposure lengthened to 15 days and then increased sharply at 22 days. It is postulated that this increase was the result of temperature conditioning or some similar reaction. At 55° and 60°F., germination increased slightly as exposure increased to 8 or 15 days, followed by a decrease at 22 days. This effect was most pronounced at 60°F., probably due to greater fungal activity at that temperature.It is concluded that satisfactory germination of the vine crops can be obtained after relatively long exposure to temperatures lower than the previously accepted minima.

scholarly journals Errors in concrete structures

1979 ◽  
Vol 6 (3) ◽  
pp. 465-467 ◽  
Author(s):  
D. E. Allen
Keyword(s):  
Concrete Structures ◽  
The Other ◽  
Other Hand ◽  
Shrinkage And Creep ◽  
Effects Of Temperature

One hundred and eighty-eight cases of error in concrete structures, 29 of which resulted in collapse and 118 in distress, deterioration, excessive cracking, spalling, deflection, or settlement, were collected from consulting engineers and government departments across Canada. The survey indicated that about half the errors originated in the design and the other half were due to faulty construction. Most of the collapses occurred during construction, mainly as a result of inadequate formwork or temporary bracing; some were due to detailing errors in design. Most serviceability failures, on the other hand, occurred during use. Many of those failures were due to lack of consideration in design of deflection or of the effects of temperature, shrinkage, and creep.

A study of cometary eruptions through OH radio-lines

1999 ◽  
Vol 173 ◽  
pp. 249-254
Author(s):  
A.M. Silva ◽  
R.D. Miró
Keyword(s):  
Short Duration ◽  
Growth Curves ◽  
The Other ◽  
Initial Mass ◽  
Radio Lines ◽  
Other Hand ◽  
Sudden Rise

AbstractWe have developed a model for theH2OandOHevolution in a comet outburst, assuming that together with the gas, a distribution of icy grains is ejected. With an initial mass of icy grains of 108kg released, theH2OandOHproductions are increased up to a factor two, and the growth curves change drastically in the first two days. The model is applied to eruptions detected in theOHradio monitorings and fits well with the slow variations in the flux. On the other hand, several events of short duration appear, consisting of a sudden rise ofOHflux, followed by a sudden decay on the second day. These apparent short bursts are frequently found as precursors of a more durable eruption. We suggest that both of them are part of a unique eruption, and that the sudden decay is due to collisions that de-excite theOHmaser, when it reaches the Cometopause region located at 1.35 × 105kmfrom the nucleus.

Closing the GAP—A 5Å Scanning Microscope

1969 ◽  
Vol 27 ◽  
pp. 6-7
Author(s):  
A. V. Crewe
Keyword(s):  
Normal Form ◽  
The Other ◽  
Resolving Power ◽  
Scanning Microscope ◽  
Conventional Microscope ◽  
Other Hand ◽  
Closing The Gap ◽  
Thermal Sources ◽  
Better Than ◽  
Transmission Microscope

We have become accustomed to differentiating between the scanning microscope and the conventional transmission microscope according to the resolving power which the two instruments offer. The conventional microscope is capable of a point resolution of a few angstroms and line resolutions of periodic objects of about 1Å. On the other hand, the scanning microscope, in its normal form, is not ordinarily capable of a point resolution better than 100Å. Upon examining reasons for the 100Å limitation, it becomes clear that this is based more on tradition than reason, and in particular, it is a condition imposed upon the microscope by adherence to thermal sources of electrons.

Life Beyond 1MeV

1980 ◽  
Vol 38 ◽  
pp. 30-33
Author(s):  
K.H. Westmacott
Keyword(s):  
Electron Microscopy ◽  
Past Experience ◽  
The Other ◽  
Good Case ◽  
Other Hand ◽  
The U.S

Life beyond 1MeV – like life after 40 – is not too different unless one takes advantage of past experience and is receptive to new opportunities. At first glance, the returns on performing electron microscopy at voltages greater than 1MeV diminish rather rapidly as the curves which describe the well-known advantages of HVEM often tend towards saturation. However, in a country with a significant HVEM capability, a good case can be made for investing in instruments with a range of maximum accelerating voltages. In this regard, the 1.5MeV KRATOS HVEM being installed in Berkeley will complement the other 650KeV, 1MeV, and 1.2MeV instruments currently operating in the U.S. One other consideration suggests that 1.5MeV is an optimum voltage machine – Its additional advantages may be purchased for not much more than a 1MeV instrument. On the other hand, the 3MeV HVEM's which seem to be operated at 2MeV maximum, are much more expensive.

Can the Academic Self-Concept be Positive and Realistic?

2005 ◽  
Vol 19 (3) ◽  
pp. 129-132 ◽  
Author(s):  
Reimer Kornmann
Keyword(s):  
Academic Performance ◽  
Opposite Effect ◽  
Self Esteem ◽  
Point Of View ◽  
The Other ◽  
Self Concept ◽  
High Ability ◽  
Self Image ◽  
Other Hand

Summary: My comment is basically restricted to the situation in which less-able students find themselves and refers only to literature in German. From this point of view I am basically able to confirm Marsh's results. It must, however, be said that with less-able pupils the opposite effect can be found: Levels of self-esteem in these pupils are raised, at least temporarily, by separate instruction, academic performance however drops; combined instruction, on the other hand, leads to improved academic performance, while levels of self-esteem drop. Apparently, the positive self-image of less-able pupils who receive separate instruction does not bring about the potential enhancement of academic performance one might expect from high-ability pupils receiving separate instruction. To resolve the dilemma, it is proposed that individual progress in learning be accentuated, and that comparisons with others be dispensed with. This fosters a self-image that can in equal measure be realistic and optimistic.

Stories and the Self

2020 ◽  
Vol 32 (2) ◽  
pp. 47-58 ◽  
Author(s):  
Stefan Krause ◽  
Markus Appel
Keyword(s):  
Meta Analysis ◽  
The Self ◽  
The Other ◽  
Lower Degree ◽  
Contrast Effects ◽  
Self Perception ◽  
Self Perceptions ◽  
Other Hand ◽  
The One ◽  
Implicit And Explicit

Abstract. Two experiments examined the influence of stories on recipients’ self-perceptions. Extending prior theory and research, our focus was on assimilation effects (i.e., changes in self-perception in line with a protagonist’s traits) as well as on contrast effects (i.e., changes in self-perception in contrast to a protagonist’s traits). In Experiment 1 ( N = 113), implicit and explicit conscientiousness were assessed after participants read a story about either a diligent or a negligent student. Moderation analyses showed that highly transported participants and participants with lower counterarguing scores assimilate the depicted traits of a story protagonist, as indicated by explicit, self-reported conscientiousness ratings. Participants, who were more critical toward a story (i.e., higher counterarguing) and with a lower degree of transportation, showed contrast effects. In Experiment 2 ( N = 103), we manipulated transportation and counterarguing, but we could not identify an effect on participants’ self-ascribed level of conscientiousness. A mini meta-analysis across both experiments revealed significant positive overall associations between transportation and counterarguing on the one hand and story-consistent self-reported conscientiousness on the other hand.

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