Heritability for yield, leaf:stem ratio and stevioside content estimated from a landrace cultivar of Stevia rebaudiana

1992 ◽  
Vol 72 (4) ◽  
pp. 1263-1266 ◽  
Author(s):  
J. E. Brandle ◽  
N. Rosa
Keyword(s):  
Chemical Properties ◽  
Leaf Tissue ◽  
Stevia Rebaudiana ◽  
Low Calorie ◽  
Leaf Yield ◽  
Potential Food ◽  
Herbaceous Perennial ◽  
Initial Results ◽  
Low Calorie Sweetener ◽  
Selection Of

Stevia rebaudiana (Bert.) Bertoni is a herbaceous perennial native to the highlands of Paraguay. A number of compounds in the leaf tissue have a potential food use as low-calorie sweeteners. The purpose of this work was to determine if sufficient genetic variability was present in a landrace cultivar of stevia to allow selection of lines with agronomic and chemical properties suitable to local production conditions. Leaf yield, leaf:stem ratio and stevioside concentration were all found to be highly heritable. Leaf-yield levels were comparable to those in other stevia-producing areas. Stevioside concentration was higher, probably as a result of production under long days. These initial results also show that improvement of stevia through selection is possible and that it has potential for production in southwestern Ontario.Key words: Response to selection, low-calorie sweetener

Stevia rebaudiana: Its agricultural, biological, and chemical properties

1998 ◽  
Vol 78 (4) ◽  
pp. 527-536 ◽  
Author(s):  
J. E. Brandle ◽  
A. N. Starratt ◽  
M. Gijzen
Keyword(s):  
Chemical Properties ◽  
Leaf Tissue ◽  
Stevia Rebaudiana ◽  
Natural Food ◽  
High Potency ◽  
Food Ingredients ◽  
Steviol Glycoside ◽  
Increasing Demand ◽  
New Research ◽  
And Chemical Properties

Stevia rebaudiana is a member of the Compositae, native to Paraguay. It produces a number of high-potency low-calorie sweeteners in its leaf tissue. The sweeteners are diterpene glycosides and range between 30 and 320 times sweeter than sugar. Increasing consumer interest in natural food ingredients means that products like stevia sweeteners will be subject to increasing demand. Such demand will need to be supported by a modern mechanised production system. The purpose of this review is to summarize the existing agricultural, chemical and biochemical literature to provide a baseline for new research. Key words: Stevia, diterpene, steviol glycoside, sweeteners

IDENTIFIKASI GLIKOSIDA DAN EVALUASI FISIK FORMULA PEMANIS RENDAH KALORI TANAMAN STEVIA (Stevia rebaudiana Bentoni) PADA MINUMAN FUNGSIONAL BIR PLETOK

2021 ◽  
Vol 2 (1) ◽  
pp. 8
Author(s):  
Dita Dwi Indahsari
Keyword(s):  
Specific Gravity ◽  
Stevia Rebaudiana ◽  
Low Calorie ◽  
The Public ◽  
Physical Evaluation ◽  
Organoleptic Test ◽  
Functional Drink ◽  
Low Calorie Sweetener ◽  
Gravity Test

Instant drinks, which are often consumed by the public, are mostly sweetened drinks that contain high calories and artificialsweeteners and can cause various diseases, such as obesity, cancer, diabetes and others. This can be controlled and prevented by consuminglow-calorie sweeteners. Stevia is a plant that has a sweetness of 300 times that of sucrose, so it can be used as a low-calorie sweetener, suchas in the functional drink Pletok beer. This study aims to identify glycosides and to evaluate the physical evaluation of the low-caloriesweetener formula for Stevia (Stevia rebaudiana B.) in the functional beverage of Bir Pletok. Physical evaluation and hedonism test werecarried out on 20 panelists and 1 expert panelist, then analyzed descriptively. In this study, several tests of instant preparations were carriedout, namely organoleptic test, pH test, specific gravity test, movable volume test and hedonism test on 20 panelists and 1 expert panelist. Theresults of the research that have been done show that the leaves of Stevia (Stevia rebaudiana B.) contain diterpenoid glycosides and based onall test preparations the best formula of the three formulas is Formula II. Keywords: Sweeteners, Stevia, Functional Drinks, Bir Pletok, Glycosides.

scholarly journals Insights in Behavior of Variably Formulated Alginate-Based Microcapsules for Cell Transplantation

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Pia Montanucci ◽  
Silvia Terenzi ◽  
Claudio Santi ◽  
Ilaria Pennoni ◽  
Vittorio Bini ◽  
...  
Keyword(s):  
Divalent Cations ◽  
Chemical Properties ◽  
Live Cells ◽  
High Performing ◽  
Physical Chemical ◽  
Degenerative Disorders ◽  
Selection Of ◽  
Better Than

Alginate-based microencapsulation of live cells may offer the opportunity to treat chronic and degenerative disorders. So far, a thorough assessment of physical-chemical behavior of alginate-based microbeads remains cloudy. A disputed issue is which divalent cation to choose for a high performing alginate gelling process. Having selected, in our system, high mannuronic (M) enriched alginates, we studied different gelling cations and their combinations to determine their eventual influence on physical-chemical properties of the final microcapsules preparation,in vitroandin vivo. We have shown that used of ultrapure alginate allows for high biocompatibility of the formed microcapsules, regardless of gelation agents, while use of different gelling cations is associated with corresponding variable effects on the capsules’ basic architecture, as originally reported in this work. However, only the final application which the capsules are destined to will ultimately guide the selection of the ideal, specific gelling divalent cations, since in principle there are no capsules that are better than others.

Improving quality of life for dialysis patients through telecare

2000 ◽  
Vol 6 (1_suppl) ◽  
pp. 80-83 ◽  
Author(s):  
Karl A Stroetmann ◽  
Peter Gruetzmacher ◽  
Veli N Stroetmann
Keyword(s):  
Quality Of Life ◽  
Low Cost ◽  
Video Communication ◽  
Daily Routine ◽  
Dialysis Patients ◽  
Home Dialysis ◽  
Service Support ◽  
Initial Results ◽  
Selection Of

Home dialysis can improve the care and quality of life for patients with renal failure. We have explored the possibility of extending home care to more patients needing continuous ambulatory peritoneal dialysis (CAPD) using telemedicine. We tested videoconferencing support for five CAPD patients using low-cost ISDN equipment (128 kbit/s). Initial results indicated that it was possible to integrate video-communication into the daily routine of the clinic and the response from patients was surprisingly positive. Selection of appropriate, affordable technology and the ISDN service support by the telecommunications provider proved to be considerably more difficult than anticipated. The first indications also suggest medical advantages for home teledialysis.

scholarly journals Hydrogen Gas Sensors Fabricated on Atomically Flat 4H-SiC Webbed Cantilevers

2008 ◽  
Vol 600-603 ◽  
pp. 1199-1202 ◽  
Author(s):  
Philip G. Neudeck ◽  
David J. Spry ◽  
Andrew J. Trunek ◽  
Laura J. Evans ◽  
Liang Yu Chen ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Rapid Detection ◽  
Hydrogen Gas ◽  
Current Gain ◽  
Proper Selection ◽  
Hydrogen Gas Sensors ◽  
Sensor Current ◽  
Atomically Flat ◽  
Initial Results ◽  
Selection Of

This paper reports on initial results from the first device tested of a “second generation” Pt-SiC Schottky diode hydrogen gas sensor that: 1) resides on the top of atomically flat 4H-SiC webbed cantilevers, 2) has integrated heater resistor, and 3) is bonded and packaged. With proper selection of heater resistor and sensor diode biases, rapid detection of H2 down to concentrations of 20 ppm was achieved. A stable sensor current gain of 125 ± 11 standard deviation was demonstrated during 250 hours of cyclic test exposures to 0.5% H2 and N2/air.

Parameter selection of Polystyrene-Dietilenetriaminepenta acetate Resin Synthesis for the separation of rare Earth Elements by using Plackett-Burman Experimental Design

2021 ◽  
pp. 5629-5634
Author(s):  
Herman Herman ◽  
Bohari Yusuf ◽  
Laode Rijai ◽  
Hadi Kuncoro ◽  
Anni Anggraeni ◽  
...  
Keyword(s):  
Reaction Temperature ◽  
Chemical Properties ◽  
Ammonia Concentration ◽  
Yield Ratio ◽  
Scale Production ◽  
Separation And Purification ◽  
Diethylene Triamine ◽  
Stirring Rate ◽  
Volume Reaction ◽  
Selection Of

The development of the separation method has an essential role in developing science and technology for the separation and purification of an element or compound from other mixtures based on differences in physical and chemical properties. This research is more focused on the selection parameters of polystyrene-based resin production using diethylene triamine penta-acetate (DTPA) light, which used as a prototype for improved scale production. The Plackett-Burman design was used to select variables that have significant influence in Methylaminopolystyrene-Diethylenetriaminepentaacetate (MAP-DTPA) resin synthesis. Eleven variables such as mol ratio of Methylamino Polystyrene and diethylene triamine penta-acetate ligands, solvent volume, reaction time, stirring rate, reaction temperature, total volume, reaction pH, incubation time, ammonia concentration, and the addition of methanol were carried out for the selection of parameters or variables in the process of MAP-DTPA resin synthesis through a statistical approach in studies for design experiments using Software Design Expert 9.0.6.2. Of the eleven variables in resin synthesis obtained, six variables have a positive influence on the yield ratio value (percent yield ratio) of MAP-DTPA resin are the mol ratio of MAP and DTPA, Stirring Rate, reaction temperature, total volume, degree of acidity, and ammonia concentration.

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