Retrospecting the Antioxidant Activity of Japanese Matcha Green Tea–Lack of Enthusiasm?
Round 1
Reviewer 1 Report
- The authors illustrate a retrospective on the antioxidant properties of matcha tea by reviewing the scientific works that have treated this topic.
Undoubtedly the subject dealt with is interesting and highlights the properties that this type of tea has thanks to numerous principles which, it seems, are more present in this tea than the other varieties.
However, the review appears to be a mere list of what is already present in the bibliography and does not discuss its contents in depth, giving the idea that the authors' intentions were a priority to make the properties of this tea known to the scientific world, it would seem almost a promotional poster. .
Some interesting work has been overlooked such as:
Olson KR et all - Green tea polyphenolic antioxidants oxidize hydrogen sulfide to thiosulfate and polysulfides: A possible new mechanism underpinning their biological action. Biol. 2020 - In addition, a similar review has recently been published which instead analyzes the issue in much more detail
Kochman J et all - Health Benefits and Chemical Composition of Matcha Green Tea: A Review. Molecules. 2020 - The structure of reference no. 76 is wrong
Author Response
Dear Editors and reviewers we greatly appreciate the revision opportunity that you have offered. We are grateful for your time and valuable suggestions. We have modified our manuscript in line with your suggestions and have marked the changes made to the manuscript using track changes. We have also provided a point by point response to the queries raised. Thank you again.
- The authors illustrate a retrospective on the antioxidant properties of matcha tea by reviewing the scientific works that have treated this topic.
Undoubtedly the subject dealt with is interesting and highlights the properties that this type of tea has thanks to numerous principles which, it seems, are more present in this tea than the other varieties.
However, the review appears to be a mere list of what is already present in the bibliography and does not discuss its contents in depth, giving the idea that the authors' intentions were a priority to make the properties of this tea known to the scientific world, it would seem almost a promotional poster. .
Some interesting work has been overlooked such as:
Olson KR et all - Green tea polyphenolic antioxidants oxidize hydrogen sulfide to thiosulfate and polysulfides: A possible new mechanism underpinning their biological action. Biol. 2020
Ans. We do understand your concern and agree that indepth contents are absent, this is exactly what we want to highlight through this review. Only few scattered reports lie in this area. When thousands of research work and detailed studies have been aimed at green tea, Matcha, with the accepted superior properties than green tea, has been poorly represented by scientific studies. This review projects this gap.
However, we have once again revisited the article and have added whatever is possible, including the reference paper you have mentioned. Thank you, we had somehow missed out on this. We have now added a discussion based on this paper. Thank you.
- In addition, a similar review has recently been published which instead analyzes the issue in much more detail
Kochman J et all - Health Benefits and Chemical Composition of Matcha Green Tea: A Review. Molecules. 2020
Ans. We had already mentioned this review in our paper as reference 62, Thank you.
- The structure of reference no. 76 is wrong
Ans. Corrected.
Reviewer 2 Report
Dear Authors,
It would really help if you could address couple of minor concerns -
1) Kindly change the representation of figure 2 to make is less confusing and more legible.
2) There are multiple instances where the anti-oxidant properties of green tea and matcha have been mentioned to the point of sounding redundant. It would help if authors could curb that a little.
Author Response
Dear Editors and reviewers we greatly appreciate the revision opportunity that you have offered. We are grateful for your time and valuable suggestions. We have modified our manuscript in line with your suggestions and have marked the changes made to the manuscript using track changes. We have also provided a point by point response to the queries raised. Thank you again.
Dear Authors,
It would really help if you could address couple of minor concerns -
- Kindly change the representation of figure 2 to make is less confusing and more legible.
Ans. Agreed. We have modified figure 2
- There are multiple instances where the anti-oxidant properties of green tea and matcha have been mentioned to the point of sounding redundant. It would help if authors could curb that a little.
Ans. Yes, we do accept that there are many such repetitions, we have curbed it. Thank you very much.
Reviewer 3 Report
The paper needed of important changes and integration.
The formula of the ROS not is true. Complete
"The accumulation of ROS due to any disruption in the delicate balance
within the cells disrupts the body's antioxidant process". This phrase is not clear:rewrite
Line 92: "are few other repercussions of ROS". The sentence is not understending
Line 97:In scientific literature, the increase in malondialdehyde (MDA) is an index of stress oxidative. Therefore it is not clear the significate of the sentence.
Line 107: in the body: What means?
The background of Table 1 is responsible of a difficult lecture of the words
Line124: minerals such as Cr, Mn, Se or Zn are other bioactives? It is sure that are minerals?Bioactive Compounds? Why?
Lines 133-136: Add references
Change ml with mL trought the manuscript
Line 157: chlorophyl? All chlorophylls?a,b,c? Add reference
The green tea and the Japanese matcha green tea has also contraindications for human health? Report some on this aspect.
Report the scient, aroma and sweetness and other properties of classic green tea and compare with respect to those matcha tea.
The cost is higher for Matcha green tea and this must be reported and discussed in the conclusions.
Author Response
Dear Editors and reviewers we greatly appreciate the revision opportunity that you have offered. We are grateful for your time and valuable suggestions. We have modified our manuscript in line with your suggestions and have marked the changes made to the manuscript using track changes. We have also provided a point by point response to the queries raised. Thank you again.
The paper needed of important changes and integration.
The formula of the ROS not is true. Complete
Ans. Completed.
"The accumulation of ROS due to any disruption in the delicate balance
within the cells disrupts the body's antioxidant process". This phrase is not clear: rewrite.
Ans. Rewritten
Line 92: "are few other repercussions of ROS". The sentence is not understanding
Ans. Clarified, thank you.
Line 97:In scientific literature, the increase in malondialdehyde (MDA) is an index of stress oxidative. Therefore it is not clear the significate of the sentence.
Ans. Rewritten. Thank you.
Line 107: in the body: What means?
Ans. Corrected.
The background of Table 1 is responsible of a difficult lecture of the words
Ans. Removed the back ground
Line124: minerals such as Cr, Mn, Se or Zn are other bioactives? It is sure that are minerals?Bioactive Compounds? Why?
Ans. Modified the sentence.
Lines 133-136: Add references
Ans. Added. Thank you.
Change ml with mL trought the manuscript
Ans. Sorry about that, we have changed it.
Line 157: chlorophyl? All chlorophylls?a,b,c? Add reference
Ans. We don’t know about a b and c…such detailed work is not available. However, reference has been Added.
The green tea and the Japanese matcha green tea has also contraindications for human health? Report some on this aspect.
Ans. Reported, as much as is known (which is not very much). We have added this point, for further study in line with this aspect in the future perspective section. Thank you for raising this.
Report the scient, aroma and sweetness and other properties of classic green tea and compare with respect to those matcha tea.
Ans. The high content of amino acid, theanine and caffeine and low content of catechin re-sult in the “umami” taste of Matcha, making Matcha, the most aromatic green tea [15,19]. In contrast, tea plants grown exposed to sun are characterized by catechins that amplify the bitter taste [21]. This is mentioned in the text.
The cost is higher for Matcha green tea and this must be reported and discussed in the conclusions.
Ans. Yes we have mentioned this earlier, we have discussed this now. Thank you.
Round 2
Reviewer 1 Report
The authors improved the article, I suggest publishing
Reviewer 3 Report
Dear authors, in this revised form the paper can be accepted
