Erratum: Vitamin C as a Coenzyme: The Hydrolysis of Mustard Oil Glucosides

1962 ◽  
Vol 48 (2) ◽  
pp. 305-305
Keyword(s):  
Vitamin C ◽  
Mustard Oil ◽  
Hydrolysis Of

scholarly journals VITAMIN C AS A COENZYME: THE HYDROLYSIS OF MUSTARD OIL GLUCOSIDES

1961 ◽  
Vol 47 (12) ◽  
pp. 1875-1880 ◽  
Author(s):  
M. G. Ettlinger ◽  
G. P. Dateo ◽  
B. W. Harrison ◽  
T. J. Mabry ◽  
C. P. Thompson
Keyword(s):  
Vitamin C ◽  
Mustard Oil ◽  
Hydrolysis Of

Vitamin C degradation in plant cells via enzymatic hydrolysis of 4-O-oxalyl-l-threonate

Nature ◽  
2004 ◽  
Vol 433 (7021) ◽  
pp. 83-87 ◽  
Author(s):  
Martha A. Green ◽  
Stephen C. Fry
Keyword(s):  
Enzymatic Hydrolysis ◽  
Vitamin C ◽  
Plant Cells ◽  
Hydrolysis Of

Optimal hydrolysis of mustard oil to erucic acid: A biocatalytic approach

2012 ◽  
Vol 181-182 ◽  
pp. 542-548 ◽  
Author(s):  
Debajyoti Goswami ◽  
Jayanta Kumar Basu ◽  
Sirshendu De
Keyword(s):  
Erucic Acid ◽  
Mustard Oil ◽  
Hydrolysis Of

scholarly journals Maltodextrin from Cassava Starch (Manihot Utilissima) and Its Application as Encapsulating Agent of Red Guava Juice Extract (Psidium Guajava)

2020 ◽  
Vol 1 (1) ◽  
pp. 26
Author(s):  
Widya Krisnitya ◽  
Purnama Darmadji ◽  
Yudi Pranoto
Keyword(s):  
Vitamin C ◽  
Water Content ◽  
Psidium Guajava ◽  
Cassava Starch ◽  
Hydrolysis Time ◽  
Encapsulation Method ◽  
Processed Products ◽  
Hydrolysis Of

Cassava starch is one of the processed products of cassava, which can be made into maltodextrin. Maltodextrin is often applied to the encapsulation method of instant drink packaging in Indonesia. One of the most favorite fruits in the instant drink industry is red guava. The research objectives are to know the characteristic of maltodextrin made by hydrolysis of cassava starch, and to identify the effects of the amount of maltodextrin added to the characteristic of red guava extract produced. In the research, the hydrolysis time of cassava starch is varied into 60, 90, and 120 minutes. Maltodextrin made will be analyzed, and its characteristics on the encapsulation of red guava extract will be defined. The red guava juice is encapsulated by the variants of maltodextrin concentration as 10%, 15%, 20%, and 25%. Red guava extract powder produced from the selected amount of maltodextrin then be analyzed for its characteristics. The results showed that the highest DE was found in maltodextrin with 120 minutes hydrolysis time. The increased amount of maltodextrin added affects the increase of solubility and vitamin C levels of the produced red guava juice extract. The water content is not affected by the amount of maltodextrin added.

THE INFLUENCE OF BIOS ON NODULE BACTERIA AND LEGUMES: B. INFLUENCE OF CRUDE BIOS PREPARATIONS ON ACID PRODUCTION BY STRAINS OF RHIZOBIUM TRIFOLII

1938 ◽  
Vol 16c (9) ◽  
pp. 347-353 ◽  
Author(s):  
D. G. Laird ◽  
P. M. West
Keyword(s):  
Vitamin C ◽  
Nicotinic Acid ◽  
Yeast Extract ◽  
Acid Production ◽  
Vitamin B ◽  
Rhizobium Trifolii ◽  
Direct Proportion ◽  
Nodule Bacteria ◽  
Synthetic Media ◽  
Hydrolysis Of

Certain components of Wildiers' Bios complex, fractionated and concentrated according to the procedure of Miller and co-workers, were found capable of replacing the stimulative action of yeast extract on strains of Rhizobium trifolii, as measured by acid production. Bios I was inactive, while Bios II B, V, and II A possessed definite activity, the potency of the fractions increasing in the order named. Moreover, the ability of these fractions to increase hydrolysis of urea by urease was in direct proportion to the stimulative effect exerted by them on the Rhizobia. These effects could not be brought about in synthetic media by the addition of crystalline vitamin B1, nicotinic acid, uracil, choline, β-alanine, carnosine, β-indole acetic and β-indole butyric acids, glutathione, cysteine and vitamin C.

THE CHEMOTACTIC RESPONSES THAT DETERMINE HOST SPECIFICITY IN AN OLIGOPHAGOUS INSECT (PLUTELLA MACULIPENNIS (CURT.) LEPIDOPTERA)

1953 ◽  
Vol 31 (1) ◽  
pp. 52-72 ◽  
Author(s):  
A. J. Thorsteinson
Keyword(s):  
Plant Species ◽  
Fission Products ◽  
Allyl Isothiocyanate ◽  
Pieris Brassicae ◽  
Mustard Oil ◽  
Feeding Stimulants ◽  
Olfactory Sense ◽  
Cruciferous Plants ◽  
Gustatory Perception ◽  
Hydrolysis Of

The mustard oil glucosides, sinigrin, sinalbin, and glucocheirolin and the musard oil, allyl isothiocyanate, as well as the enzyme myrosin, were prepared from the seeds of cruciferous plants. Pieris brassicae (L.) and Plutella maculipennis (Curt.) were induced to feed on leaves of plant species which they normally refuse by painting the leaves with a solution of sinigrin or sinalbin but would not feed on such leaves treated with allyl mustard oil. Feeding responses of P. maculipennis larvae were tested on agar gels containing the powdered, dehydrated leaves of various plants alone and in combinations with glucosides, mustard oil, and myrosin. The amount of feeding was estimated by counts of frass pellets produced by the larvae during the test period. It was shown that sinigrin, sinalbin, and glucocheirolin are feeding stimulants for P. maculipennis larvae. Since the larvae feed readily on at least 40 plant species which are reported to contain mustard oil glucosides it was concluded that the mustard oil glucosides are specific feeding stimulants for this insect. The threshold concentrations for P. maculipennis of gustatory perception of sinigrin under these conditions are of the order of 2 p.p.m. for sinigrin and about 20 p.p.m. for sinalbin. Optimum feeding responses were obtained only when the glucoside is offered in a medium containing other nutrients in the form of powdered, dehydrated leaves or artificial mixtures. In some experiments the addition of allyl mustard oils slightly increased feeding on media containing sinigrin. The addition of viable myrosin to diets containing sinigrin decreased the feeding responses. Since heat-killed myrosin has no repellent effect, it appears that the action of myrosin is due to the depletion by hydrolysis of the quantity of sinigrin in the medium. Apparently the fission products of the hydrolysis including mustard oil are less attractive than the parent glucosides. Since hydrolysis of glucoside will release only minute amounts of mustard oil in the short space of time intervening between biting and swallowing it is unlikely that the gustatory receptors will be exposed to appreciable concentrations of mustard oil as compared with glucoside. On the other hand it is possible that infinitesimal amounts of mustard oil vapor emanating from leaves may stimulate the olfactory sense which is characteristically extremely sensitive in insects. While hunger induces sustained feeding in the absence of mustard oil provided a gustatory stimulant is present, such an olfactory stimulus might conceivably initiate feeding more promptly. This would account for observations in some experiments that larvae produced more frass when feeding on media containing a little mustard oil as well as sinigrin. The power of sinigrin to induce P. maculipennis to feed on nutrient media makes possible the development of an artificial medium for studies of the nutrition of this phytophagous insect.

scholarly journals Response of organic manures on post harvest and soil nutrient restoration on cauliflower production

2018 ◽  
Vol 18 ◽  
pp. 67-72
Author(s):  
Manoj Basnet ◽  
Shanta Man Shakya ◽  
Bandhu Raj Baral
Keyword(s):  
Vitamin C ◽  
Farmyard Manure ◽  
Poultry Manure ◽  
Chemical Properties ◽  
Soil Nutrient ◽  
Mustard Oil ◽  
Organic Manures ◽  
Post Harvest ◽  
Mustard Oil Cake ◽  
Physical And Chemical

This study was conducted at Ilam Municipality-2, Nepal to determine the response of organic manures on post harvest and nutrient restorative effect of cauliflower. Five manures, viz., bansoon, mustard oil cake, poultry manure, farmyard manure, and vermi-compost were evaluated. The postharvest losses, vitamin C content and soil nutrient restorative behavior were significantly highest with vermi-compost as compared to other manures. The maximum vitamin C content of 10.92 mg/100 gm was found with vermi-compost whereas the lowest of 9.66 mg/100 gm was found at farmyard manure. Moreover, the physiological losses were found to be least with vermi compost and the most with bansoon manure. Moreover, the restorative properties i.e. pH, N,P,K and organic %age were found to be significantly highest with vermi-compost as compared to other organic manures. This study concludes that vermi compost increases vitamin C content, postharvest longevity and improvement of physical and chemical properties of the soil.

Fine Structural Localization of Acyltransferases Involved in Lipid Synthesis in Intestinal Mucosa.

1970 ◽  
Vol 28 ◽  
pp. 54-55
Author(s):  
R. J. Barrnett ◽  
J. A. Higgins
Keyword(s):  
Smooth Endoplasmic Reticulum ◽  
Lipid Synthesis ◽  
Mucosal Cell ◽  
Structural Localization ◽  
Morphological Studies ◽  
Mucosal Cells ◽  
Initial Appearance ◽  
Sh Group ◽  
Hydrolysis Of ◽  
Intestinal Mucosal Cells

The main products of intestinal hydrolysis of dietary triglycerides are free fatty acids and monoglycerides. These form micelles from which the lipids are absorbed across the mucosal cell brush border. Biochemical studies have indicated that intestinal mucosal cells possess a triglyceride synthesising system, which uses monoglyceride directly as an acylacceptor as well as the system found in other tissues in which alphaglycerophosphate is the acylacceptor. The former pathway is used preferentially for the resynthesis of triglyceride from absorbed lipid, while the latter is used mainly for phospholipid synthesis. Both lipids are incorporated into chylomicrons. Morphological studies have shown that during fat absorption there is an initial appearance of fat droplets within the cisternae of the smooth endoplasmic reticulum and that these subsequently accumulate in the golgi elements from which they are released at the lateral borders of the cell as chylomicrons.We have recently developed several methods for the fine structural localization of acyltransferases dependent on the precipitation, in an electron dense form, of CoA released during the transfer of the acyl group to an acceptor, and have now applied these methods to a study of the fine structural localization of the enzymes involved in chylomicron lipid biosynthesis. These methods are based on the reduction of ferricyanide ions by the free SH group of CoA.

Lattice imaging and pore structure of β ferric oxyhydroxide

1978 ◽  
Vol 36 (1) ◽  
pp. 264-265
Author(s):  
T. Baird ◽  
J.R. Fryer ◽  
S.T. Galbraith
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Bulk Material ◽  
Model Structure ◽  
Bulk Crystals ◽  
Lattice Imaging ◽  
Thin Sections ◽  
Ferric Oxyhydroxide ◽  
Resolution Electron ◽  
Hydrolysis Of

Introduction Previously we had suggested (l) that the striations observed in the pod shaped crystals of β FeOOH were an artefact of imaging in the electron microscope. Contrary to this adsorption measurements on bulk material had indicated the presence of some porosity and Gallagher (2) had proposed a model structure - based on the hollandite structure - showing the hollandite rods forming the sides of 30Å pores running the length of the crystal. Low resolution electron microscopy by Watson (3) on sectioned crystals embedded in methylmethacrylate had tended to support the existence of such pores.We have applied modern high resolution techniques to the bulk crystals and thin sections of them without confirming these earlier postulatesExperimental β FeOOH was prepared by room temperature hydrolysis of 0.01M solutions of FeCl3.6H2O, The precipitate was washed, dried in air, and embedded in Scandiplast resin. The sections were out on an LKB III Ultramicrotome to a thickness of about 500Å.

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