Chemical compositional characterization of eight pear cultivars grown in China

Chen, Jiluan; Wang, Zhengfu; Wu, Jihong; Qiang, Wang; Hu, Xiaosong

doi:10.1016/j.foodchem.2006.11.038

Cited by 149 publications

(101 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[29] Rahmatian et al [32] reported that in 'Faevrit Daglas' type, the total acidity rate was 0.75% and in 'Shahmive' type it was 0.18%. Chen et al [33] found out that the acidity levels of 'Jingbai' and 'Kuerle Fragrant' were 0.46% and 0.10%, respectively. It can be seen from Table 2 that pear genotypes contain anthocyanin, ascorbic acid and phenolic contents, as well as antioxidant compounds.…”

Section: Resultsmentioning

confidence: 99%

Comparative study of bioactive components in pear genotypes from Ardahan/Turkey

Abacı

Sevindik

Ayvaz

2015

Biotechnology & Biotechnological Equipment

View full text Add to dashboard Cite

In this study, 10 pear genotypes ( _ Incir, Bal, Nene, Kabak, Banda, Kırmızı, _ Imlahor, Baraka, Limon and G€ u g€ um), which grow in the Ardahan region, were evaluated for their total phenolic content, total anthocyanin content, brix , pH, titratable acidity, total ascorbic acid content and antioxidant activity. According to the results, the pear genotypes used in this study had a high brix8 content, high phenolic, anthocyanin and ascorbic acid contents, as well as high antioxidant activity. It was determined that 'Bal' pear had the highest total phenolic content and antioxidant activity. In 'Nene' and 'Incir' pears, the quantity of ascorbic acid and anthocyanin, as well as the antioxidant activity were less than those in the other genotypes. Correlations between brix and pH, acidity and pH, peel phenolic content and flesh phenolic content, flesh ascorbic acid content and peel phenolic content, peel antioxidant activity and flesh phenolic content, were found to be significant. As a conclusion, due to the high levels of antioxidants and other bioactive compounds in pears, it is suggested to consume those fruits, especially with their peels. The results from this study will provide new insights into farming, fresh fruit consumption, industrial food processing and future research studies. IntroductıonPear is an important type of fruit, which is grown in Torrid Zones.[1] China is in the first place of pear farming with its 60% share of the pear production in the world.[2] According to 2012 data, Turkey's annual pear production is 387,345 tons.[3] Pear, which is native to Anatolia, Caucasia and Central Asia, has nearly 600 types in our country. In Ardahan region, 38 tons of pears are produced annually in a 34 daa area. However, this amount of pear production provides limited economic profit to farmers compared to other agricultural products in the region.Fruits, like pear, are important nutritions as carbohydrate sources. They contain approximately 54% fructose, 18% sorbitol, 15% sucrose, 13% glucose, low protein (0.5%) and lipid (0.3%) contents and high incidence of fibre (15À28 g/kg). These rates are suitable for diabetic and obese patients. [4,5] Pear contains more fibre than many other fruits.[6] In addition to the high level of carbohydrate and fibre, it contains other important nutritional elements, such as vitamins, minerals, anthocyanins and phenolic contents.[7] Phenolic compounds have a significant importance in the resistance to mechanical and biological stress. They also have a great importance due to the presence of pharmacological characteristics and factors which reveal the quality of the fruit, such as flavour, colour, soreness and acidity. [8] Other previously performed studies showed that fruit consumption reduces the risk of chronic diseases such as cancer and diabetes, as well as cardiovascular and nerve diseases.[9À12] It is stated that the antioxidant effect of phenolic compounds within fruits and vegetables reduces the disease risk.[13] Therefore, consumption of nourishments containin...

show abstract

Section: Resultsmentioning

confidence: 99%

Comparative study of bioactive components in pear genotypes from Ardahan/Turkey

Abacı

Sevindik

Ayvaz

2015

Biotechnology & Biotechnological Equipment

View full text Add to dashboard Cite

show abstract

“…The desirable taste and high digestibility of pear (Pyrus communis L.) fruits make them very popular among consumers. Several studies have focused on their chemical composition (Chen et al, 2007;Colaric et al, 2006;Ferreira et al, 2002;Galvis-Sá nchez et al, 2003;Tanriö ven and Eks ßi, 2005;Wang et al, 2002). The analysis of sugars, organic and fatty acids, amino acids, phenolics, vitamins, volatiles and minerals in different pear cultivars have been reported.…”

Section: Introductionmentioning

confidence: 99%

Phenolic composition and antioxidant activity of Rocha pear and other pear cultivars – A comparative study

Salta

Martins

Santos

et al. 2010

Journal of Functional Foods

108

View full text Add to dashboard Cite

“…Pear extract is a reservoir of phytochemicals including organic acids, amino acids, peptides and proteins. 12,13 In addition, the presence of saccharides in the extract provides synergistic reducing power for the rapid transformation of chloroaurate ions into gold nanoparticles. Simple mixing of pear extract (50% [v/v]) with HAuCl4 (2 mM) at 90 o C promptly initiated the appearance of a purple-red color, indicating the formation of gold nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

“…7 Pear fruits are known to be rich in phytochemicals, antioxidants, vitamins, proteins, organic acids and amino acids. 12,13 Recently we reported, the synthesis a Both authors equally contributed to this work.…”

Section: Introductionmentioning

confidence: 99%

Biogenic Nano-Synthesis; towards the Efficient Production of the Biocompatible Gold Nanoparticles

Gajanan¹,

Eom²,

Kim³

et al. 2010

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

We present a rapid biogenic method for the production of nanoscale gold particles using pear extract. The formation and stability of pear-derived gold nanoparticles (Pear-AuNPs) were monitored by ultraviolet-visible spectroscopy. Their morphology, elemental composition and crystalline phase were determined by transmission electron microscopy, energydispersive X-ray spectroscopy and selected area electron diffraction. The average core size of crystalline Pear-AuNPs was in the range of 10 ± 5 nm and the observed morphology was spherical. The X-ray photoelectron spectrum showed a strong peak for the pure 'Au' phase. The circular dichroism spectrum indicated the natural capping ability of the pear extract, which generated peptide-gold nanoparticles. These nanoparticles were stable in aqueous solution for two months. A cell viability assay of Pear-AuNPs showed biocompatibility with human embryonic kidney 293 cells. Accordingly, this eco-friendly process for the bio-mimetic production of Pear-AuNPs is nontoxic in nature; consequently, it will find potential application in nano-biotechnology.

show abstract

Chemical compositional characterization of eight pear cultivars grown in China

Cited by 149 publications

References 5 publications

Comparative study of bioactive components in pear genotypes from Ardahan/Turkey

Comparative study of bioactive components in pear genotypes from Ardahan/Turkey

Phenolic composition and antioxidant activity of Rocha pear and other pear cultivars – A comparative study

Biogenic Nano-Synthesis; towards the Efficient Production of the Biocompatible Gold Nanoparticles

Contact Info

Product

Resources

About