Application of Microwave Return Loss for sensing Internal Quality of Peaches

Lleó, L.; Ruiz-Altisent, Margarita; Hernández, Noel Batista; Gutiérrez, Martín

doi:10.1016/j.biosystemseng.2006.11.010

Cited by 9 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because the reflection coefficient depends on the material temperature T [10,11], the temperature of the samples was kept constant at 20±0.1 • C. Figure 1 illustrates the reflection coefficient as a function of frequency for various aqueous sucrose concentrations. Note that the measurements taken for the return loss and phase shift for each sample show that both quantities reach a constant value at a certain frequency.…”

Section: Reflection Coefficient Of Aqueous Sucrose Solutions In the Mmentioning

confidence: 99%

Nondestructive Measurement of Sugar Content in Apples by Millimeter-Wave Reflectometry

Oda

Mase

Uchino

2011

J Infrared Milli Terahz Waves

View full text Add to dashboard Cite

A millimeter-wave reflectometer has been developed for the nondestructive measurement of the sugar content in apples. The intensity of the reflected wave from fruit was confirmed to depend on the sugar content and temperature by performing reflectometry with a vector network analyzer of aqueous sucrose solutions. Moreover, the developed reflectometer was applied to the sugar content measurement of apples. We obtained a strong, almost linear relationship between the intensity of the reflected wave and the sugar content in apples.

show abstract

Section: Reflection Coefficient Of Aqueous Sucrose Solutions In the Mmentioning

confidence: 99%

Nondestructive Measurement of Sugar Content in Apples by Millimeter-Wave Reflectometry

Oda

Mase

Uchino

2011

J Infrared Milli Terahz Waves

View full text Add to dashboard Cite

show abstract

“…Some improvements were observed in separating the apples into three quality classes based on four to nine principal components, although some overlaps still existed among the classes. Lleo et al (2007) studied Microwave (MW) spectroscopy as an internal-quality estimating technique for peaches to establish the feasibility of MW measurements for firmness and sugar estimation. They showed that multiple linear regression models, based on return loss and reflectance variables, were not robust.…”

Section: Storagementioning

confidence: 99%

Trends in Recent Studies on Post-Harvest Technology

Natsuga

2015

Journal of Biosystems Engineering

View full text Add to dashboard Cite

Purpose: This article summarizes the trends in recent research publications in relation to post-harvest technology for drying, storage, and quality, between 2005 and 2015. Methods: As of September 7, 2015, a search query using two keywords, drying and agriculture, on the Web of Science (Registered trademark of Thomson Reuters) resulted in 3749 articles that were published between 2005 and 2015. However, the review was restricted to research articles published in the journals Transactions of the ASABE (American Society of Agricultural and Biological Engineers) and Biosystems Engineering: Journal of European Agricultural Engineering. Results: The total number of articles in the two journals related to drying, storage, and quality was 500, 319, and 885, respectively. The number of articles related to drying, storage, and quality was 250, 177, and 250, respectively, in Transactions of the ASABE. The number of articles related to drying, storage, and quality was 250, 142, and 283, respectively, in Biosystems Engineering. Conclusions: A shift in research focus from drying and storage to quality in Transactions of the ASABE might reflect a shift toward quality-conscious consumers. It seems that ASABE members are more focused on articles related to post-harvest technologies on quality than their European counterparts. Articles were cited based on their abstract content. Readers should read the full articles for more details.

show abstract

“…The flesh firmness of several species of fruits has been predicted by the above mentioned systems: apples (Duprat et al, 1997;Lemmertyn et al, 1998;Peleg, 1999;De Belie et al, 2000;Jarén and García-Pardo, 2002;Park et al, 2003;Shmulevich et al, 2003;Lu and Bailey, 2005;De Ketelaere et al, 2006;Noh and Lu, 2007;Peng and Lu, 2007;Kim et al, 2009); peaches or nectarines (Steinmetz et al, 1996;Peleg, 1999;Ruiz-Altisent et al, 2006;Lleó et al, 2007;Valero et al, 2007;Pérez-Marín et al, 2009;Subedi and Walsh, 2009); tomatoes (Duprat et al, 1997;Schotte et al, 1999;De Ketelaere and De Baerdemaeker, 2001;De Ketelaere et al, 2006;Mizrach, 2007); mangoes (Mizrach et al, 1997Jha et al, 2006;Subedi and Walsh, 2009); pears (Jarén and García-Pardo, 2002;Liu et al, 2008;Slaughter et al 2009);apricots (McGlone and Jordan, 2000;Bureau et al, 2009); bananas (Subedi and Walsh, 2009);kiwifruits (McGlone and Kawano, 1998;McGlone and Jordan, 2000;Terasaki et al, 2001); avocados ; plums (Valero et al, 2007); orange (M...…”

Section: Introductionmentioning

confidence: 98%

“…Several studies examined and compared different excitations such as acoustic and mechanical impact (Shmulevich et al, 2003;De Ketelaere et al, 2006); acoustic and optic (Subedi and Walsh, 2009). In other studies two or more systems were used together to improve performances: sound plus impact plus micro-deformation (Steinmetz et al, 1996), microwave plus optical spectroscopy (Lleó et al, 2007); micro-deformation plus optical (Ruiz-Altisent et al, 2006). Some devices used laser systems to measure displacement or deformation induced mechanically by means of a shaker (Terasaki et al, 2001) or by air pressure puffs (McGlone and Jordan, 2000).…”

Section: Introductionmentioning

confidence: 99%