We thank you for your e-mail of 24 July 2017 with the comments on our manuscript (MS) INDCRO-D-17-01815R2 on "Growth, photosynthetic pigments, phenols and in vitro biological activities of aqueous anise, dill and fennel extracts in response to 2 mM Zinc". We have read it carefully and we do understand most of the referee's comments. Please find bellow our reply and comments following each point raised by the reviewers. All corrections and additions performed in the MS text have been marked in blue. Reviewers' comments: Reviewer #1: The revised version of the manuscript INDCRO-D-17-01815R2 meets all the criteria of scientific work. Paper may be published after several technical corrections:-Suggestion for the title (please accept the proposal, the current version is incorrect): Growth, photosynthetic pigments, phenolic content and biological activities of Foeniculum vulgare Mill., Anethum graveolens L. and Pimpinella anisum L. (Apiaceae) in response to zinc RESPONSE:This proposal made by reviewer 1 was taken into account.

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Summary This paper is concerned with the robust H∞ nonfragile controller design for a particular class of nonlinear systems, namely, the perturbed polynomial systems, which are subject to unstructured bounded uncertainties in both the system model and the control law. Combining the Lyapunov stability theory, properties of linear matrix inequality, and Kronecker product properties, a sufficient condition of robust H∞ nonfragile control design is proposed. More specifically, we propose a robust H∞ controller of nonlinear polynomial systems with additive unstructured uncertainties and variation in the control law itself that guarantee the stability and the attenuation of external perturbations. Two examples are provided to illustrate the effectiveness of the proposed approach.

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Marrubium vulgare L., known as horehound, is a widespread and widely known plant that is used in beer breweries and also as a traditional remedy in Tunisia. In this study, methanolic extracts of plants harvested from five different locations were investigated for their antioxidant activities using three assays (ferric reducing power, radical scavenging activity, and β-carotene-linoleic acid bleaching assay) as well as the total phenolic content. The mineral composition of the plant was also investigated concerning the following elements: Fe, Mg, Ca, Cu, Zn, Mn, K, and three heavy metals, Ni, Pb, and Cd. Marrubiin, the major bioactive diterpenoid lactone, was quantified by NMR in the samples. The essential oils were obtained by hydrodistillation, and their radical scavenging activity was investigated. The toxicity of essential oils was evaluated against Artemia salina (the brine shrimp larva). The essential oil showed a weak radical scavenging activity and low toxicity. Data obtained from the five different locations showed that the antioxidant activity, as well as the total phenolic and marrubiin content, were strongly affected by the harvest sites. The metal content in the samples showed differences with the harvest location, but there was always a great abundance of calcium, magnesium, and potassium.