Sensory stability of pistachio nut (Pistacia vera L.) varieties during storage using descriptive analysis combined with chemometrics

2015 ◽  
Vol 8 (2) ◽  
pp. 106-113 ◽  
Author(s):  
Mahdi Ghasemi-Varnamkhasti
2021 ◽  
pp. 1-8
Author(s):  
Jianlu Zhang ◽  
Trevor Ranford

The methodology of r contour mapping was used in this study of ‘Sirora’ pistachio (Pistacia vera) to establish whether there are any significant relationships between fruit quality characteristics in commercial pistachio production and air temperature in the year before the harvest of the crop as measured at a nearby meteorological station. The work was done near Mildura in Australia. Blank nut percentages were found to be reduced by lower minimum temperatures in mid to late August (southern hemisphere). The percentage of narrow-split nuts was decreased by higher maximum temperatures across almost the whole growing season. Damaged-shell nuts were reduced by higher average daily minimum temperatures between 26 Nov. and 3 Feb. The technique of r contour mapping is shown to have potential as a way to provide early warning of possible quality problems before harvest and as a means of generating hypotheses for future physiological studies


Author(s):  
Abdullah Mohammad Alahmad, Muhammed Absi Kerdush, Muhammed A Abdullah Mohammad Alahmad, Muhammed Absi Kerdush, Muhammed A

This research (study)was carried out over four years (2017-2020) on Ashori pistachio nut cultivar in a pistachio orchard located in Soran/Hama region (SYRIA) in order to determine the effect of leaves fertilisation, supplementsl irrigation, and NNA treatment on bud shedding, yield, and nut splitting rate in pistachio trees.The experiment was designed according to the split-split-pot designs, where the main plots included supplementsl irrigation treatment (without irrigation, winter irrigation, summer irrigation, winter and summer irrigation) and the first-order plots included leaves fertilization concentrations (0, 1 and 2 g.liter -1) and the second-order plots included NAA levels (0, 25 and 50 ppm). The results indicated that the percentage of floral buds falling down during the fruit yield season, was higher than the non-fruit yield season and it was at its lowest in the third season because of the combined effect of fertilization (2g/lit) and NAA (50 ppm) and it reached (30.9%) and followed by the treatment of NAA (50 ppm) which reached (31.2%). The yield average was at its highest in the fourth fruit yield season (39.49 kg) at the fourth irrigation treatment (winter + summer) whit it was in the control treatment) 29.17 kg). The average percentage of nut splitting in the fourth season was (97.1%) for the effect of fourth irrigation treatment and fertilization level (1 g/lit), followed by the fourth irrigation treatment which the nut splitting was (96.77%).    


KIMIKA ◽  
2014 ◽  
Vol 25 (1) ◽  
pp. 1-10
Author(s):  
Nico G. Dumandan ◽  
Mark Rickard N. Angelica ◽  
Ma. Desiree Belina-Aldemita ◽  
Mary Ann O. Torio

This study explored the potential of pistachio nut (Pistacia vera L.) total soluble proteins to release bioactive peptides exhibiting angiotensin-converting enzyme (ACE) inhibition, antioxidative, and antibacterial activities. The total soluble proteins were extracted from the ground, defatted nut using 0.010 M phosphate buffered saline, pH 6.8. The extracted proteins were hydrolyzed at different time intervals using trypsin and chymotrypsin. Hydrolysates of the total soluble proteins at 24 h digestion time exhibited the highest ACE-inhibition activity of 76.67 ± 0.10% and 70.83 ± 0.00% for chymotrypsin and trypsin digestion, respectively. The 24 h enzymatic hydrolysates were further fractionated in RP-HPLC using a C18 Vydac column. The C1 fraction from the 24 h chymotryptic hydrolysates and T2 from the 24 h tryptic hydrolysates exhibited the highest ACE-inhibition activities with an IC50 value of 147.7 ± 0.8 and 148.7 ± 0.6 μg/mL, respectively. The 24 h chymotryptic and tryptic hydrolysates also exhibited a DPPH radical scavenging activity of 83.7 ± 1.1% (EC50 = 356.5 ± 1.0 μg/mL) and 80.4 ± 0.2% (EC50 = 402.7 ± 1.1 μg/mL), respectively. The hydroxyl radical scavenging activities of the 24 h chymotryptic and tryptic hydrolysates were found to be 22.8 ± 1.0 and 16.6 ± 3.7%, respectively. However, the 24 h tryptic and chymotryptic hydrolysates did not exhibit any antibacterial activity against the gram-negative Escherichia coli and gram-positive Staphylococcus aureus. Therefore, the total soluble proteins of pistachio nuts were found to contain peptides exhibiting ACE-inhibition and antioxidative activities upon hydrolysis with trypsin and chymotrypsin.


1982 ◽  
Vol 13 (1) ◽  
pp. 37-41
Author(s):  
Larry J. Mattes

Elicited imitation tasks are frequently used as a diagnostic tool in evaluating children with communication handicaps. This article presents a scoring procedure that can be used to obtain an in-depth descriptive analysis of responses produced on elicited imitation tasks. The Elicited Language Analysis Procedure makes it possible to systematically evaluate responses in terms of both their syntactic and semantic relationships to the stimulus sentences presented by the examiner. Response quality measures are also included in the analysis procedure.


Crisis ◽  
2018 ◽  
Vol 39 (6) ◽  
pp. 451-460 ◽  
Author(s):  
Megan S. Chesin ◽  
Beth S. Brodsky ◽  
Brandon Beeler ◽  
Christopher A. Benjamin-Phillips ◽  
Ida Taghavi ◽  
...  

Abstract. Background: Few investigations of patient perceptions of suicide prevention interventions exist, limiting our understanding of the processes and components of treatment that may be engaging and effective for high suicide-risk patients. Aims: Building on promising quantitative data that showed that adjunct mindfulness-based cognitive therapy to prevent suicidal behavior (MBCT-S) reduced suicidal thinking and depression among high suicide-risk patients, we subjected MBCT-S to qualitative inspection by patient participants. Method: Data were provided by 15 patients who completed MBCT-S during a focus group and/or via a survey. Qualitative data were coded using thematic analysis. Themes were summarized using descriptive analysis. Results: Most patients viewed the intervention as acceptable and feasible. Patients attributed MBCT-S treatment engagement and clinical improvement to improved emotion regulation. A minority of patients indicated that factors related to the group treatment modality were helpful. A small percentage of patients found that aspects of the treatment increased emotional distress and triggered suicidal thinking. These experiences, however, were described as fleeting and were not linked to suicidal behavior. Limitations: The sample size was small. Conclusion: Information gathered from this study may assist in refining MBCT-S and treatments to prevent suicidal behavior among high suicide-risk patients generally.


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