No significant changes were observed in the amino acids
profile of proteins from traditional sun-dried pears when
compared to the fresh samples (Fig. 2b). However, in
relation to the same mass of protein, a decrease in the
content of Pro (-16% in 2008 and -50% in 2009), Phe
(-15 and -16%), Lys (-9 and -17%) and Thr (-10 and
-13%) was observed in both harvests, contrasting with the
increase in Glx (?17 and ?25%). The higher difference
was Pro, in accordance with the higher increase in Pro found
as free amino acid. Also, the increase in the content in Glx
in proteins is in accordance with the lower amounts found as
free amino acid. As no data are available concerning the
composition of the amino acids of proteins of dried fruits,
the origin of this phenomenon remains unknown, although
it can be suggested that modulation in Pro-rich glycoprotein
synthesis and/or degradation seems to be involved. Concerning
the decrease in Phe, Lys and Thr, it is possible that it
is related with the occurrence of Maillard reactions. This
hypothesis will be verified taking into account the analysis
of other independent samples, namely the pears dried
according to different methodologies, which presentdifferent colours (Fig. 1): traditional sun-dried, processed
in a large glass greenhouse with air convection (GH1),
processed in a small greenhouse with natural convection
(GH2) and processed using a hot air tunnel in the absence of
light (HAT).
No significant changes were observed in the amino acids
profile of proteins from traditional sun-dried pears when
compared to the fresh samples (Fig. 2b). However, in
relation to the same mass of protein, a decrease in the
content of Pro (-16% in 2008 and -50% in 2009), Phe
(-15 and -16%), Lys (-9 and -17%) and Thr (-10 and
-13%) was observed in both harvests, contrasting with the
increase in Glx (?17 and ?25%). The higher difference
was Pro, in accordance with the higher increase in Pro found
as free amino acid. Also, the increase in the content in Glx
in proteins is in accordance with the lower amounts found as
free amino acid. As no data are available concerning the
composition of the amino acids of proteins of dried fruits,
the origin of this phenomenon remains unknown, although
it can be suggested that modulation in Pro-rich glycoprotein
synthesis and/or degradation seems to be involved. Concerning
the decrease in Phe, Lys and Thr, it is possible that it
is related with the occurrence of Maillard reactions. This
hypothesis will be verified taking into account the analysis
of other independent samples, namely the pears dried
according to different methodologies, which presentdifferent colours (Fig. 1): traditional sun-dried, processed
in a large glass greenhouse with air convection (GH1),
processed in a small greenhouse with natural convection
(GH2) and processed using a hot air tunnel in the absence of
light (HAT).
การแปล กรุณารอสักครู่..

No significant changes were observed in the amino acids
profile of proteins from traditional sun-dried pears when
compared to the fresh samples (Fig. 2b). However, in
relation to the same mass of protein, a decrease in the
content of Pro (-16% in 2008 and -50% in 2009), Phe
(-15 and -16%), Lys (-9 and -17%) and Thr (-10 and
-13%) was observed in both harvests, contrasting with the
increase in Glx (?17 and ?25%). The higher difference
was Pro, in accordance with the higher increase in Pro found
as free amino acid. Also, the increase in the content in Glx
in proteins is in accordance with the lower amounts found as
free amino acid. As no data are available concerning the
composition of the amino acids of proteins of dried fruits,
the origin of this phenomenon remains unknown, although
it can be suggested that modulation in Pro-rich glycoprotein
synthesis and/or degradation seems to be involved. Concerning
the decrease in Phe, Lys and Thr, it is possible that it
is related with the occurrence of Maillard reactions. This
hypothesis will be verified taking into account the analysis
of other independent samples, namely the pears dried
according to different methodologies, which presentdifferent colours (Fig. 1): traditional sun-dried, processed
in a large glass greenhouse with air convection (GH1),
processed in a small greenhouse with natural convection
(GH2) and processed using a hot air tunnel in the absence of
light (HAT).
การแปล กรุณารอสักครู่..
