Aqueous extracts of 30 plants were investigated for their antioxidant properties using DPPH and ABTS radical scavenging capacity assay, oxygen radical absorbance capacity (ORAC) assay, superoxide dismutase (SOD) assay, and ferric reducing antioxidant potential (FRAP) assay. Total phenolic content was also determined by the Folin−Ciocalteu method. Antioxidant properties and total phenolic content differed significantly among selected plants. It was found that oak (Quercus robur), pine (Pinus maritima), and cinnamon (Cinnamomum zeylanicum) aqueous extracts possessed the highest antioxidant capacities in most of the methods used, and thus could be potential rich sources of natural antioxidants. These extracts presented the highest phenolic content (300−400 mg GAE/g). Mate (Ilex paraguariensis) and clove (Eugenia caryophyllus clovis) aqueous extracts also showed strong antioxidant properties and a high phenolic content (about 200 mg GAE/g). A significant relationship between antioxidant capacity and total phe...

https://faculty.missouri.edu/~glaserr/3700s14/Antioxidant_ORAC_et_al_jf803011r.pdf

Comparative study of antioxidant properties and total phenolic content of 30 plant extracts of industrial interest using DPPH, ABTS, FRAP, SOD, and ORAC assays.

Comparison of ABTS/DPPH assays to measure antioxidant capacity in popular antioxidant-rich US foods

Psidium guajava: a review of its traditional uses, phytochemistry and pharmacology.

Antioxidant activities of rosemary (Rosmarinus Officinalis L.) extract, blackseed (Nigella sativa L.) essential oil, carnosic acid, rosmarinic acid and sesamol

Total phenolic compounds and antioxidant capacities of major fruits from Ecuador

https://aggie-horticulture.tamu.edu/faculty/cisneros/Papers/Thaipong_2006.pdf

Comparison of ABTS, DPPH, FRAP, and ORAC assays for estimating antioxidant activity from guava fruit extracts

Feeding difficulties in cleft lip and palate (CLP) infants is commonly observed and is the most traumatic experience the family has to face. These infants are undernourished and have compromised growth. The purpose of this study was to 1) assess general health and growth parameters in children with CLP and in normal children; and 2) investigate the feeding methods of CLP infants and normal infants. A total of 221 children from birth to six years of both sexes, with CLP (60 children) and normal (161 children) were selected. The CLP and normal children were divided into three subgroups by age. The practice of feeding the infants in subgroup I was assessed using standard piloted questionnaires. The assessment of growth was done at baseline and at six months in all the subgroups.The general well being of the children was assessed by noting the number of common infections. Results showed that a significantly higher percentage of mothers with normal babies (p<0.01) had a positive attitude towards breast feeding. When compared to normal children, CLP children were more susceptible to infections (p<0.05) and measured significantly lower on the height growth curve(p<0.05). Hence, height can be used to monitor growth in CLP children.

/pdf/hydrophilic-and-lipophilic-antioxidant-activities-of-guava-24tn90vhp5.pdf

Hydrophilic and lipophilic antioxidant activities of guava fruits.

SummaryTo examine the effect of the temperature on the development of reproductive organs, potted plants of five year old ‘Hakuho’ peach were exposed to constant temperatures of 15°C, 20°C, 25°C, 30°C, and natural conditions. The rate of flower and leaf bud burst, and flowering were recorded every day. The characteristics of reproductive organs in each treatment were examined by measuring flower size, pollen germinabitily, pollen tube elongation, development of embryo sacs, and fruit set. Percentage of flower bud bursting at 30°C was about 80% within 3 d after the onset of the treatment, while it took 18 d to reach the same percentage in the control. Flower bud break preceded leaf bud break in all treatments. Flowering was earliest at 30°C, and the period from bud burst to flowering was as short as 3–4 d. Flower sizes were significantly decreased with increasing temperature. The pollen germination was negatively affected by higher temperature, but the pollen tube elongation in the pistils was faster at hi...

Adverse effects of high temperature on the development of reproductive organs in ‘Hakuho’ peach trees

http://pirun.ku.ac.th/~agrkst/VarCom_guava.pdf

Genetic and environmental variance components in guava fruit qualities

ADDITIONAL INDEX WORDS. germplasm, diversity, Prunus salicina, molecular markers, breeding, bootstrap analysis ABSTRACT. Diploid plums (Prunus L. sp.) and their progenitor species were characterized for randomly amplified polymorphic DNA polymorphisms. Bootstrap analysis indicated the variance of genetic similarities differed little when the sample size was >80 markers. Two species from China (Prunus salicina Lindl. and P. simonii Carr.) and one species from Europe (P. cerasifera Ehrh.) contributed the bulk (72% to 90%) of the genetic background to the cultivated diploid plum. The southeastern plum gene pool was more diverse than those from California, Florida, or South Africa because of the greater contribution of P. cerasifera and P. angustifolia Marsh. to its genetic background.

/pdf/genetic-relationships-among-cultivated-diploid-plums-and-3k0cbah42f.pdf

Unaroj Boonprakob

Papers

Comparison of ABTS, DPPH, FRAP, and ORAC assays for estimating antioxidant activity from guava fruit extracts

Hydrophilic and lipophilic antioxidant activities of guava fruits.

Adverse effects of high temperature on the development of reproductive organs in ‘Hakuho’ peach trees

Genetic and environmental variance components in guava fruit qualities

Genetic Relationships among Cultivated Diploid Plums and Their Progenitors as Determined by RAPD Markers