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At least 73 records · Page 4Linked to original sources
PubMed2004

High butanol production by Clostridium saccharoperbutylacetonicum N1-4 in fed-batch culture with pH-Stat continuous butyric acid and glucose feeding method.

A pH-stat fed-batch culture by feeding butyric acid and glucose has been studied in an acetone-butanol-ethanol (ABE) fermentation using Clostridium saccharoperbutylacetonicum N1-4. The specific butanol production rate increased from 0.10 g-butanol/g-cells/h with no feeding of butyric acid to 0.42 g-butanol/g-cells/h with 5.0 g/l butyric acid. The pH value in broth decreases with butyric acid production during acidogenesis, and then butyric acid reutilization and butanol production result in a pH increase during solventogensis. The pH-stat fed-batch culture was performed to maintain a constant pH and butyric acid concentration in the culture broth, but feeding only butyric acid could not support butyric acid utilization and butanol production. Subsequently, when a mixture of butyric acid and glucose was fed, butyric acid was utilized and butanol was produced. To investigate the effect of the feeding ratio of butyric acid to glucose (B/G ratio), several B/G ratio solutions were fed. The maximum butanol production was 16 g/l and the residual glucose concentration in broth was very low at a B/G ratio of 1.4. Moreover, yields of butanol in relation to cell mass and glucose utilization were 54% and 72% higher in pH-stat fed-batch culture with butyric acid than that of conventional batch culture, respectively.

Journal Article↗
PubMed2006

[Influence of feeding method on maxillofacial development].

The functional differences between breast-feeding and bottle-feeding may have a significant effect on dento-facial development and on the genesis of some severe malocclusions. Orthodontists should be aware of this sometimes under-estimated aspect of development. They should, in conformity with their role as professional health care providers, advise long-term breast feeding as a way of preventing certain disorders or, at least, reducing their severity.

Bottle Feeding↗
PubMed1998

Members of the throat microflora among infants with different feeding methods.

Normal throat microflora have an important role of antagonistic activity against pathogenic bacteria. We studied members of throat microflora of 30 exclusively breastfed, 15 mixed-fed and 15 exclusively formula-fed infants at the age of 1 month. All infants harboured alpha haemolytic Streptococcus. The incidence of gamma Streptococcus and coagulase negative Staphylococcus's isolation from breastfed infants was higher. We also found that coagulase negative Staphylococcus is one of three predominant bacterial species in breastfed infants.

Analysis of Variance↗
PubMedDate not supplied

Comparison of direct and membrane feeding methods to infect Anopheles arabiensis with Plasmodium falciparum.

Two standard methods are available to infect mosquitoes with malaria parasites: direct feeding through the skin of the gametocyte carrier, and membrane feeding. Anopheles arabiensis collected at larval stages and reared in an insectary were fed in parallel by feeding on Plasmodium falciparum gametocyte carriers and by membrane feeding on venous blood of the same gametocyte carriers. Infection of mosquitoes was assessed at Day 7 post bloodmeal by oocyst count of the mosquito midguts. The following parameters were not significantly different between the two methods: the percentage of gametocyte carriers infective for at least one mosquito (52.4% through the skin versus 57.1% through the membrane), the mean infection rate of mosquitoes (10.0% versus 11.3%), the geometric mean oocyst number per mosquito (2.51 versus 3.83). In conclusion, infection of mosquitoes by membrane feeding was similar to infection by direct feeding. Most of the volunteers preferred venipuncture to mosquito bites.

Animals↗
PubMed1995

[Effect of feeding methods in infants on serum lipid profile].

Mothers very often do not start to breast feed their children, or stop very quickly and introduce various formulas based either on modified or unmodified cow's milk. These infant formulas differ from human milk in their chemical composition. Breast milk is the most suitable source of all nutrients required for the development of a newborn or infant. The serum levels of total cholesterol, HDL-cholesterol, LDL-cholesterol, triglycerides and phospholipids were determined. The influence of the type of feeding on the levels of the above-mentioned lipids was analyzed. Higher serum levels of triglycerides in babies fed formulas based on modified cow's milk than in those fed formulas based on unmodified milk were found. Higher serum levels of phospholipids were found in breast-fed babies than in those fed formulas based on unmodified cow's milk.

Breast Feeding↗
PubMed1996

A prospective randomized trial comparing continuous versus intermittent feeding methods in very low birth weight neonates.

OBJECTIVE: To compare the effects of continuous versus intermittent feedings on physical growth, gastrointestinal tolerance, and macronutrient retention in very low birth weight infants ( < 1500 gm). STUDY DESIGN: Very low birth weight neonates stratified by birth weight were randomly assigned to either continuous (24-hour) or intermittent (every 3 hours) nasogastric feedings. Feedings with half-strength Similac Special Care formula were initiated between day 2 and 3 and were advanced isoenergetically to goal. Daily weights, volume/caloric intakes, weekly anthropometric and dynamic skin-fold thickness measurements, and data on feeding milestones and clinical complications were collected. Nitrogen, carbohydrate, and fat balance studies were performed on a subset of male subjects. RESULTS: Eighty-two neonates with birth weights between 750 and 1500 gm who were born between 27 and 34 weeks of gestation were randomly assigned to continuous (n = 42) and intermittent (n = 40) feeding groups. There were no significant differences in baseline demographics and severity of respiratory distress between groups. There were no significant differences in days to regain birth weight, days to full enteral feedings, days to discharge, and discharge anthropometric measurements between continuously fed and intermittently fed infants, both when evaluated together and according to 250 gm weight intervals. Retention rates of nitrogen, fat, total carbohydrate, and lactose were comparable in the continuously fed (n = 17) and intermittently fed (n = 13) male neonates. Very low birth weight neonates who were fed continuously did not have feeding-related complications. CONCLUSION: Very low birth weight infants achieve similar growth and macronutrient retention rates and have comparable lengths of hospital stay whether they are fed with continuous or intermittent feedings.

Body Weight↗