Effect of different drying methods on drying characteristics, colour, total phenolic content and antioxidant capacity of <scp>G</scp>oldenberry (<i><scp>P</scp>hysalis peruviana </i><scp>L</scp>.)

“…Dietary intake of antioxidants from medicinal plants has been increasingly accepted as a strategy for maintaining a healthy life [3]. The fruit of Physalis peruviana L. are called as goldenberry, gooseberry, cape gooseberry all over the world [4,5]. In Turkey, this fruit is known as "altın çilek or güveyfeneri" [6].…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Capacity and Metal Content of Physalis peruviana L. Fruit Sold in Markets

Eken¹,

Ünlü-Endirlik²,

Baldemir³

et al. 2016

Ann Clin Anal Med

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ÖzetAmaç: Antioksidan aktivite gösteren ve eser elementlerin gerekli miktarları-nı içeren tıbbi gıdaların diyetle alınması, iyi bir sağlıklı yaşam sürdürmek için önemlidir. Çalışmamızda, Kayseri'de marketlerde satılan Altınçilek (Physalis peruviana L.) meyvesinin antioksidan kapasitesinin ve metal içeriğinin belirlenmesi amaçlanmıştır. Gereç ve Yöntem: P. peruviana meyvesinin antioksidan kapasitesi, 2,2-difenil-1-pikrilhidrazil (DPPH) serbest radikal süpürme testi ile belirlenmiştir. Meyvenin metanol (MeOH) ekstresinin DPPH serbest radikalini temizleme kapasitesi, referans olarak askorbik asit, gallik asit ve bütillen-dirilmiş hidroksitoluen (BHT) gibi bilinen antioksidanlarla karşılaştırılmıştır. P. peruviana meyvesinin metal içeriği atomik absorpsiyon spektrometresi (AAS) kullanılarak ölçülmüştür. Bulgular: P. peruviana meyve ekstresinin DPPH serbest radikal temizleme aktivitesinin olduğu, fakat antioksidan kapasitesinin standart maddelerden daha düşük olduğu tespit edilmiştir. P. peruviana, askorbik asit, gallik asit ve BHT'nin % 50 inhibitör konsantrasyon (IC 50 ) değer-leri sırası ile 32 mg/ml, 3.8 mg/ml, 3.51 mg/ml ve 1.21 mg/ml olarak belirlenmiştir. AAS ile yapılan analizler sonucu, meyvenin eser element yönünden zengin içeriğe sahip iken ağır metal içeriğinin az miktarda veya hiç olmadı-ğı gözlenmiştir. Tartışma: Bu sonuçlar, P. peruviana meyvesinin doğal kaynaklı potansiyel bir antioksidan ve eser element kaynağı olduğunu göstermektedir. Anahtar Kelimeler Eser Elementler; Physalis; Antioksidan EtkiAbstract Aim: The dietary intake of medicinal food with antioxidant activity and required amounts of trace elements is important to pursue good healthy life. In our study, we aimed to determine the antioxidant capacity and metal content of goldenberry (Physalis peruviana L.) fruit sold in markets in Kayseri. Material and Method: The antioxidant capacity of P. peruviana fruit was determined by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay. The DPPH radical scavenger capacity of the methanol extract of fruit was compared with known antioxidants such as ascorbic acid, gallic acid, and butylated hydroxytoluene (BHT) as references. The metal content of P. peruviana fruit was measured by using atomic absorption spectrometer (AAS). Results: The fruit of P. peruviana was found to possess DPPH free radical scavenging activity but the antioxidant capacity was lower than the standard substances. Inhibitory concentration 50% (IC 50 ) values of P. peruviana, ascorbic acid, gallic acid, and BHT were determined as 32 mg/ml, 3.8 mg/ml, 3.51 mg/ ml, and 1.21 mg/ml, respectively. As a result of the analysis by AAS, it was observed that P. peruviana fruit contented plentiful trace elements and the content of heavy metal was small amount or not detected. Discussion: These observations suggest that the fruit of P. peruviana has a potential source of antioxidant and trace elements of natural origin.

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“…The C-values were not significantly different among the samples. Izli et al [24] observed that the goldenberry after the MWD presented lower C and a* values compared with the fresh samples. The colour difference (ΔE) for all treatments did not show significant differences.…”

Section: Quality Of the Final Productmentioning

confidence: 99%

Microwave Drying of Apple Cubes — Effect of the Osmotic Pre-treatment and Comparison with Hot Air Drying

Assis¹,

Morais²,

Morais³

2017

AFSE

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Abstract. The aim of the present work was to study the effects of the osmotic dehydration (OD) on the mass transfer kinetics of the microwave drying (MWD) and some quality parameters of apple cubes. The fit of several mathematical models was tested to describe the drying. A comparison between MWD and hot air drying (HAD) was performed. Apple cubes were osmotically treated with 60ºBrix sucrose or sorbitol solutions at 60ºC and dried at a microwave power between 160 and 850 W. Overall, the increase of the microwave power from 160 to 500 W resulted in an increase of the water loss rate, shown by the A parameter of modified Page's model, of 123 and 155% for samples osmotically dehydrated with sucrose and sorbitol solutions, respectively. The OD tends to increase the drying rate, but the osmotic agent used did not have any effect. The modified Page's model described well the drying kinetics and MWD was faster than HAD. The water activity of the osmotically dehydrated product was reduced to below 0.4 after MWD at 500 W. The MWD of control samples resulted in a loss of 39% and 28% of the total phenolic content and the antioxidant activity, respectively. For osmotically dehydrated samples, a loss of around 75% was observed for both these quality parameters after the osmotic treatment.

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Effect of different drying methods on drying characteristics, colour, total phenolic content and antioxidant capacity of Goldenberry (Physalis peruviana L.)

Cited by 83 publications

References 36 publications

Estimation of whole lemon mass transfer parameters during hot air drying using different modelling methods

Estimation of whole lemon mass transfer parameters during hot air drying using different modelling methods

Antioxidant Capacity and Metal Content of Physalis peruviana L. Fruit Sold in Markets

Microwave Drying of Apple Cubes — Effect of the Osmotic Pre-treatment and Comparison with Hot Air Drying

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